In order to get extra credit, model pupil Simon reluctantly joins a of voluntary mural painting project. He instantly feels unwelcome, and is threatened to keep silent after witnessing them using and sniffing spray paint. He sees Pete get a nose bleed and cues dad to guess and tell him how dangerous the addiction is after Pete is hospitalized. Lies add to Simon's endurance. During community service, Mary meets and instantly falls for Robbie Palmer, a gentleman who was convicted without blame and impresses the Camden parents. Matt feels twice betrayed because Shana didn't tell him she applied for an NYU scholarship and dad recommended her behind his back.

Robbie fears Eric will never give him a chance when told, now his and Mary's community service goes so well they can meet, but only at home. Super hot Brad Landers finally asks Lucy on a date, but she stresses over a time-clashing girls project. Simon looked forward to the 'guys night like it used to be' Matt promised him, but his sleepover proves a testing marathon of witnessing stressing over Shana's New York dorm. Annie's step-ma arrives reporting Charles has Alzheimer, he claims it's the other way around. Schoolmate Ben's family inspires Ruthie to fear an apocalyptic millennium bug.

Robbie and Mary get to go to the movies on a double-date with his brother Rick and Lucy, but that unwilling couple ends up cheating on their partners, while Robbie has another secret. Simon and Nigel buy cigarettes illegally for a school project, yet Eric waits even while they ponder about smoking 'just one'. Matt is a wreck after Shana fails to call once, worse when she does too cheerfully, but his very despair attracts both girl neighbors his house-mate invited.

The parents insist on spoiling the kids' Valentine's day by celebrating the baby twins' birthday and demanding presents. Robbie gets permission afterward to drive Mary to the coffeehouse where his parents met. Matt puts off telling Shana his ex Heather transferred to his college, but Mary spills the beans. Simon's first passionate kiss caused a love-bite, which Deena meanly insists to return, causing disastrous discovery. Matt sees Robbie with 'his brother's date', sees through it but isn't believed that's cheating, until the romantic trip's hidden agenda is revealed.

Each one of the Camden kids has a relationship problem; Mary decides to skip college and get back together with Robbie; Simon is dumped; Matt is torn.

Simon learns the truth from Deena about why she broke up with him; Ruthie and Lucy try to reconcile with their exes; Matt gets back together with Heater.

Robbie and Cheryl ask Eric to marry them because of her pregnancy. He smells a rat and learns just in time that she intended to trick Robbie, who is grateful to escape a loveless marriage and offers to stay away from Mary. Lonely Simon has joined punk Norton's schoolmates gang. Lucy, who is lightly butt-slapped, and the Camden parents, make huge scenes over inappropriate remarks from some of the knaves, treating Simon as if he 'hates women'. Matt tries to help both sides understand, but fails, yet a real incident shows Simon's truly good nature. Matt can go for Priscilla after hearing from Heather she's dating another already.

Robbie's ma lost her house and moved away without him and moving in with Cheryl also fell through, so Eric finds him studying outside, yet keeping up top marks. He promises to find a shelter and takes him home meanwhile. Despite embarrassing episodes, all the fault of Camden girls, Robbie proves himself a model house-guest. So Matt finds the couch occupied when chased from his dorm by John, who is completely besotted with Priscilla Carter. Simon keeps is foxy new date Sasha a secret until she arrives in a BMW. Lucy is passively jealous when Mike Pierce announces he got early college acceptance, then goes over to make up and thus discovers his ma's disabling mental condition.

A month later, perfect house guest Robbie is getting popular with most Camdens, except Annie who childishly splits hairs about his domestic input, meant to help her but making her feel redundant, while Ginger takes care of grandpa. Matt is unwilling to stand by John when he meets the Carter parents and seeks refuge with Heather, whose boyfriend Thomas gets them off their backs by suggesting they're a sheets magnate family. Mary starts a round of panicking with a false rumor that Robbie is dating Lucy. Simon is flattered when Robbie asks his financial advice and starts copying him, even Matt follows suits walking around shirtless. Robbie finds a surprising job and the perfect thank you gift.

Eric threatens Robbie with eviction because he thinks he's keeping secrets about Mary. The house is abuzz with secrets and preparations for an elaborate surprise party for Eric's birthday. Johnny drops Mercy on the Camdens' doorstep after Frankie abandons them. Mike trusts Lucy enough to look after his mother for a day, during which the woman surprises her, both by speaking and by what she says.

Robbie is not amused by week-long roommate Matt's jealous whining, but still helps him make up with John, who lacked the courage to tell Priscilla her 'Japanese' room remodeling disgusts both guys. Mike decides after a kiss without chemistry to trade in Lucy for Elaina Casey, while matching Lucy with Mike's friend Jeremy. Simon and Robbie prevent suddenly jealous Lucy's reactions spoiling the whole partner-switch, which thus ends well.

Everyone but Lucy is stuck home celebrating the twins' birthday on Valentine's Day; Lucy and Jeremy keep running into Lucy's ex-boyfriend.

An item found in a lost wallet starts speculations whether it's Simon's or Robbie's and how to make sure it doesn't mean their dates go too far. None of the siblings gives Mary the triumphant welcome she hoped for at her first weekend visit, so Robbie is scolded for not wildly kissing her.

Robbie's father Ed Palmer, a deadbeat who left the boys very young, turns up and slickly gets free board, next convinces his boy to move out and rent a room together. Eric perseveres to make Robbie realize he can't waste his future on a super-dad that never existed, as his very imperfect mother always claimed. Simon's social life clashes badly with parental essay standard demands. Matt is furious to find Ruthie lied to use him in willful disobedience. Lucy hangs out with classmate Ashley's 'cool' mother Serena, only to find a 'regular' mother is better.

Matt is terrified when summoned stat for a psychological session, standard for med students. After an unsatisfactory attempt to be 'coached' by therapy-experienced Mike, Matt lands with Doc, who turns out to be fraud and yet a godsend. Simon wants to break up with older, yet immature Sasha, but lets various advice how to go easy on her complicate things for him. Eric confronts a rather blunt hospital doctor about what to tell terminal patients like Harold Mann about their life expectancy and why.

Robbie is told last, despite Camden's advice for her to be open, that Mary has bumped into her ex Wilson, who does a course in Buffalo, and agreed to a dinner at his place. Robbie is doubly vexed as he immediately calls her after meeting a lookalike, Marie, also a basketball player, whom he asked over to get hold of her study notes. Matt meets and dates Cheryl before he realizes she's Robbie's ex. Mary also bumps into Lucy's Jeremy.

Robbie wonders why Matt is suddenly so friendly, ignoring it's because Matt dates his ex Cheryl, who wants him to tell Robbie but doesn't push that, while Robbie spontaneously tells he studies a course with Heather, who needs his help. Simon feels a social outcast when nicknamed 'virgin Camden' because his mother assured Sasha's blabbermouth ma he's sexually inactive, but actually schoolgirls line up to date him. Viciously jealous, Annie meanly forces Eric to give up counseling Serena, yet denies that's her doing and sticks to her guns after Ruthie commends her as bitchy selfishness-model.

Only Robbie refuses to sign, Eric alone not being eligible, Ruthie's petition against a popular ethics teacher Miller's rumored prejudiced dismissal. Robbie learns about the household rule you can't complain over 18 about anything vaguely political without registering as a voter. Matt is first to work out the televised petition commotion is an unsavory misunderstanding, for which the school kids are tricked into fake detention by her brother. Annie's pa recently found out and now wants her and the family to know she has an older but illegitimate sister, Lilly, from his late first love.

Robbie panics when Mary announces she's returning for the summer months, so he tells her to follow parental instructions not to date her all that time. Mike inspires Lucy how to stay with Jeremy now he's accepted to Juliard: marriage, so they get engaged. Matt is dumped by Cheryl for not telling the family about them, but that gives him the courage and more reward then he bargained for. Wilson was dumped but traveled all the way home, just when Mary's claim of sexual intimacy with Jeremy make Robbie deck Lucy's equally startled fiancé. Simon and Tim discover Deena dated each of them behind the other's back. Serena abuses her lonely birthday to make a move on therapist Eric, while hardware shopkeeper James Carver courts long-oblivious Annie.

Robbie gathers the courage to tell Mary openly, now her lies are exposed, their relationship is over, staying with the family his priority. Simon nurses his broken heart on account of Deenah, refusing to become 'just friends' again. Wilson bonds, while bunking, with Matt and Robby, and demands for Mary to return and go steady in New York, or break up completely. Jeremy forgives Lucy for doubting her fiancé's fidelity. Ultimately Eric helps her transfer to his New York alma mater, near Juliard. The Camden parents finally realize Serena and James are seducing them, ward off each suitor and match the lonely hearts.

Robbie remains inconsolable since Mary left with Wilson. The Colonel figures she won't go to college but marry and be a mother to Billy, so he insists on a job, preferably in public service, but he nor Wilson are pleased she opts for the police or fire department. Lucy refuses to explain why she left the New York seminary, apparently after a break-up with Jeremy, and Robbie is parentally dissuaded as consoling company. Annie works out her pre-menopause frustration on Eric, and he takes it out deviously on model student Simon for just a bit of attitude. Matt loses his hospital orderly job, but soon gets another: in a free clinic with mainly teenage and young-adult mothers-to-be.

Robbie amuses sneaky cookie-thief Ruthie by nicknaming her Snookie and sets straight Lucy's far less flattering interpretation. Wilson diplomatically handles Mary's absurd blaming him for her failed fire department application after she set fire to the colonel's curtains. Despite Eric's continuous meanness, Simon acts most responsibly when a kid only he, not even a teacher, defended against school bullies mentions planning to shoot them. Eric confronts the supervisor of a firm's staff where 'pranks' extend to stealing a prosthetic arm an counsels his ex Merle on forgiveness.

Robbie offers to pay $200 rent for the garage apartment if it ever gets finished. However, the siblings all want it, so Matt is promised a switch with his room and the others are jealous. Billy clearly pretends to be 'really' sick to make Mary stay with him and perhaps become his mama. Lucy promises handyman Ray Rickey work on the garage apartment, but the crook fakes a fall and has a leech-lawyer waiting.

Robbie introduces Lucy to his friend Hugh, feeling she should date again, but gets jealous enough to separate them with lies. Matt stands up against the free clinic's staff and gets Hank to overrule Dr. Kent's diagnose-and-operate routine. Feeling incompetent as a waiter at Pete's Simon resigns, but he gets promoted because of his business-planning skills. Cued by Billy via George, Wilson and Mary (who is failing in firefighter training) realize it's time to decide whether to commit to becoming a family.

Insecure Robbie hides his budding rebound-affair with Lucy. Wilson is deeply hurt when he finds fickle 'bride' Mary kissing fire-department coursemate Ben Kinkirk. Simon doesn't enjoy bully-mate Rick's girl abusing him as excuse to dump him. Annie's flippant advice nearly wrecks pupil Christy Parks' parents' marriage, yet she resists help even from Eric.

Robbie and Lucy gather the courage to tell everybody about their affair, only to find they all knew and don't really care. Without the thrill of sneaking, their first date fizzles. Ben Kinkirk and Mary both pass the firefighters course, but their meeting on whether to celebrate with classmates messes up Mary's reconciliation with fiancé Wilson., and Billy's questions make Wilson decide against her plan to elope. Matt discovers that Hank and Julie are planning a divorce, and Eric and Annie try to find out why and see if they can help fix it.

Wilson is amused that all the Camdens call him after Mary's sudden return home, but wants her to tell them what happened. Robbie makes clear he's no longer interested at all in her or Lucy, having found a potential bride. The siblings however are furious when their wayward sister gets the royal treatment from their mother, while their better behavior yielded nothing. It's the last straw when the garage apartment they all want is thrown in, so they squat. Annie declares a war of attrition on them. Eric cowardly keeps out and hopes his sermon on the prodigal son may smooth things, but everyone feels targeted.

Robbie is happy with his new hot Latina girlfriend Joy Reyes and persuades her rich, devoutly Catholic father Ramon Reyes (for now) of his honorable intentions. The garage apartment squatters' resolve is self-sabotaged by their rivalry to get what shouldn't be Mary's and Ruthie's scheming. In the end return under the maternal yoke and make up (more or less forcibly) with Mary, who meanwhile repents, but Eric wisely doubts her sincerity and rectitude.

Robbie has spent too much time with Joy on top of his two jobs, so he demands a day off to study. She insists 'just this one day' and Eric convinces Robbie he should at least find out if it's a special day. On his way, he finds and picks up a stray dog tagged in Arizona. It turns out to be the pet who disappeared exactly two years ago with Joy's kid brother Joseph, and might now lead the police to the boy and his abductor. At home, the girls ask their parents to select ideal partners, leading to lots of speculation. Matt and Simon's attempt to pick up suitable girls by walking the twins backfires.

Simon's big day, the start of his driving lessons, finally arrived, but Eric just forgot about it. Grandpa Jackson seduces the knave into driving him around without a license, which leads through more bad grandfatherly advice to a televised police car chase. Jealous of Joy, Matt behaves childishly toward Robbie whose gentleman's attitude ultimately gives in. Lucy hoped Jeremy called to make up, but he just wants his engagement ring back. The local fire chief isn't fooled by Mary's eagerness to transfer.

Robbie volunteers his car to give Simon a driving lesson as Eric again fails to turn up as promised. Alas, they bump into Matt's car. Wilson has moved and left instructions not to tell Mary his new location. Firefighter Ben Kinkirk volunteers to pick up a rescue dog so he can visit Mary, who instantly calls him her true love again, but ends up found out. Meanwhile Lucy, who refuses to take off Jeremy's ring, is openly jealous of such a hunky suitor, Ruthie pretends not to care. Robbie's brother Ronald drops by and is furious to hear that his muse Lucy dated Robbie. Annie resigns her teaching post without consulting anyone.

The next Valentine's day, Robbie prepared a surprise for Joy. Mary meanly supposes the hotel she overheard him contacting by phone means another sex trap. Joy, who assumed the butler to be away like her father really is, isn't discouraged, but bitterly claims Robbie doesn't love her truly because he refuses to risk getting intimate. Matt contacts all his 'true lovers', wondering why he never stayed hooked up. Lucy again assumes Jeremy, who is back in town and double-dating with Mike, wants her back and pretends to have a date. Mary is shocked to see Wilson moved back and goes steady with her former school friend Corey Conway. Simon gets permission to let his hot senior date Maria 'help babysit' and gets her cute kid brother Jake to spare Ruthie dateless embarrassment.

Robbie's apparently firm happiness with Joy kindles envy in Matt, who is now so in love with wedding plans that he vows that his next steady date must be *the one*. Being commandeered into clinic duty, Matt misses his date with a promising candidate but he also meets a fellow med student, Sarah Glass, daughter of Rabbi Richard Glass. Sarah insists that they must meet each other's parents. Although both parental pairs plead against a mixed-religions marriage, the lovebirds soldier on.

Matt has married Rabbi Glass' daughter Sarah after one date. Robbie is mildly amused at the family's speculations and how they're worrying about whether Matt 'was dumber than Mary with Wilson'. Only Ruthie finds out, answering when Matt calls, but he swears her to secrecy. Meanwhile, Matt and Sarah go tell her parents first, but at the last moment she pretends they just got engaged, a lie they must now extend to the Camden home, where the 'news' only adds to the mounting stress.

Level-headed Robbie is the only one intentionally left home to babysit the twins when the Camdens accept a first dinner invitation at humorist Rabbi Glass's home. Mary beats Lucy to the punch faking illness so she can escape the event and try to seduce Robbie away from Joy. Simon takes his half-Jewish friend Morris along, but he fails miserably as a good example of someone from a mixed-faith household: he has no clue about the Sabbath or other Jewish traditions. Eric loses it completely when Matt says he's considering converting to Judaism, but they make up during a synagogue service.

Matt ignores at his peril Robbie and Simon's warning not to believe a girl's claim she needs no gift, especially concerning the diamond engagement ring. Eric's solution within budget, industrial imitation, is 'welcomed' even more bitter, until an heirloom is passed on. Lucy flew along to Buffalo with Mary to 'pick up her stuff', but discovers aboard she wants another shot at Ben. After provoking airport security, Lucy gets an instant crush on gallant, hot cop Kevin Kinkirk. She arranges a double-date with his brother, who turns out to be none other then Ben, who is however most suspicious of record-fickle Mary until Kevin gives the decisive push.

The Camdens are surprised by the arrival of Mary with her new guy Ben and his cop brother Kevin, and with her new flight-attendant job that enabled their cheap flights. While Lucy gets close to Kevin, Eric still obsesses over Matt's secret and Robbie and Ruthie still help keep it. Eric neglects his counseling appointment with the elderly Tallridges whose adult son Jerry has 'suddenly' moved out, yet that's just what will inspire him.

Annie discovers Ruthie is writing to a Marine fighting in Afghanistan as part of a school project. The Camden family read what Ruthie has written to her pen pal about their lives and in turn learn about a Marine who so bravely has left his wife and son to fight in the war against terror. When Ruthie fails to get a response email at school and Eric hears about a helicopter going down killing two people he contacts the Colonel.

Preparations for Matt and Sarah's wedding are being made and things aren't going the way Eric or Annie planned. Matt decides he will convert to Judaism after a discussion with Sarah's dad who convinces Matt that he can convert on the wedding day much to Eric's dismay. Annie panics when Sarah's mother tells her to expect 100 kosher guests to her backyard pot luck dinner. Ruthie and Simon begin to resent Robbie being in the house. Ruthie wants her bedroom back forcing Robbie out now that Matt will be moving out and Simon gets upset that Matt chooses Robbie to be his best man and Sam and David call for Robbie instead of him. Lucy gets upset that Kevin won't come to Glen Oak for Matt's wedding and Ben decides to propose to Mary after Mary starts giving him the cold shoulder. Eric and Sarah's dad the Rabbi go head to head and it seems Matt and Sarah's wedding won't go ahead after all.

The Camden family gather together for Matt and Sarah's wedding. Eric and the Rabbi make amends while Ben and Kevin decide to go to Glen Oak to pursue Mary and Lucy. Ruthie and Simon sort out their issues with Robbie.

The season starts with the Camden house in a state of change. Kevin moves in the garage apartment and plans to propose to Lucy. Robbie meets Kevin's police partner and is ready for romance. Ruthie starts dating, and Mary has an older boyfriend.

Simon starts a dating service. Mary and Jack are planning to move to Florida. Annie and Eric have their hands full with family events.

Ken Smith threatens the church because he disapproves of Mary's relationship with his son; Ben reads Lucy's diary; Simon's former girlfriend is rumored to be pregnant.

Eric is told he has to have open heart surgery and is faced with telling Annie and the family.

Eric has double bypass surgery and most of the family waits for results at the hospital. Ruthie stays home to watch the twins. Lucy tells her parents she is ready to accept a wedding proposal, but Kevin is no longer ready to propose.

Eric is recovering from surgery at home and starting to get restless. Annie tells everyone in the family to talk to Eric about their problems so he will fell useful. Lucy's friend Paul asks her to convince his parents to let him travel.

The Colonel sends a nutty old lady to help the Camdens.

While still recovering from surgery, Eric decides to spy on the new associate pastor. Ruthie is caught with her boyfriend when she is supposed to be babysitting. Kevin's ex-wife appears.

Robbie's father Ed Palmer, a deadbeat who left the boys very young, turns up and slickly gets free board, next convinces his boy to move out and rent a room together. Eric perseveres to make Robbie realize he can't waste his future on a super-dad that never existed, as his very imperfect mother always claimed. Simon's social life clashes badly with parental essay standard demands. Matt is furious to find Ruthie lied to use him in willful disobedience. Lucy hangs out with classmate Ashley's 'cool' mother Serena, only to find a 'regular' mother is better.

Robbie is told last, despite Camden's advice for her to be open, that Mary has bumped into her ex Wilson, who does a course in Buffalo, and agreed to a dinner at his place. Robbie is doubly vexed as he immediately calls her after meeting a lookalike, Marie, also a basketball player, whom he asked over to get hold of her study notes. Matt meets and dates Cheryl before he realizes she's Robbie's ex. Mary also bumps into Lucy's Jeremy.

Robbie has spent too much time with Joy on top of his two jobs, so he demands a day off to study. She insists 'just this one day' and Eric convinces Robbie he should at least find out if it's a special day. On his way, he finds and picks up a stray dog tagged in Arizona. It turns out to be the pet who disappeared exactly two years ago with Joy's kid brother Joseph, and might now lead the police to the boy and his abductor. At home, the girls ask their parents to select ideal partners, leading to lots of speculation. Matt and Simon's attempt to pick up suitable girls by walking the twins backfires.

Robbie's ma lost her house and moved away without him and moving in with Cheryl also fell through, so Eric finds him studying outside, yet keeping up top marks. He promises to find a shelter and takes him home meanwhile. Despite embarrassing episodes, all the fault of Camden girls, Robbie proves himself a model house-guest. So Matt finds the couch occupied when chased from his dorm by John, who is completely besotted with Priscilla Carter. Simon keeps is foxy new date Sasha a secret until she arrives in a BMW. Lucy is passively jealous when Mike Pierce announces he got early college acceptance, then goes over to make up and thus discovers his ma's disabling mental condition.

A month later, perfect house guest Robbie is getting popular with most Camdens, except Annie who childishly splits hairs about his domestic input, meant to help her but making her feel redundant, while Ginger takes care of grandpa. Matt is unwilling to stand by John when he meets the Carter parents and seeks refuge with Heather, whose boyfriend Thomas gets them off their backs by suggesting they're a sheets magnate family. Mary starts a round of panicking with a false rumor that Robbie is dating Lucy. Simon is flattered when Robbie asks his financial advice and starts copying him, even Matt follows suits walking around shirtless. Robbie finds a surprising job and the perfect thank you gift.

Robbie introduces Lucy to his friend Hugh, feeling she should date again, but gets jealous enough to separate them with lies. Matt stands up against the free clinic's staff and gets Hank to overrule Dr. Kent's diagnose-and-operate routine. Feeling incompetent as a waiter at Pete's Simon resigns, but he gets promoted because of his business-planning skills. Cued by Billy via George, Wilson and Mary (who is failing in firefighter training) realize it's time to decide whether to commit to becoming a family.

An item found in a lost wallet starts speculations whether it's Simon's or Robbie's and how to make sure it doesn't mean their dates go too far. None of the siblings gives Mary the triumphant welcome she hoped for at her first weekend visit, so Robbie is scolded for not wildly kissing her.

Everyone but Lucy is stuck home celebrating the twins' birthday on Valentine's Day; Lucy and Jeremy keep running into Lucy's ex-boyfriend.

Robbie panics when Mary announces she's returning for the summer months, so he tells her to follow parental instructions not to date her all that time. Mike inspires Lucy how to stay with Jeremy now he's accepted to Juliard: marriage, so they get engaged. Matt is dumped by Cheryl for not telling the family about them, but that gives him the courage and more reward then he bargained for. Wilson was dumped but traveled all the way home, just when Mary's claim of sexual intimacy with Jeremy make Robbie deck Lucy's equally startled fiancé. Simon and Tim discover Deena dated each of them behind the other's back. Serena abuses her lonely birthday to make a move on therapist Eric, while hardware shopkeeper James Carver courts long-oblivious Annie.

The next Valentine's day, Robbie prepared a surprise for Joy. Mary meanly supposes the hotel she overheard him contacting by phone means another sex trap. Joy, who assumed the butler to be away like her father really is, isn't discouraged, but bitterly claims Robbie doesn't love her truly because he refuses to risk getting intimate. Matt contacts all his 'true lovers', wondering why he never stayed hooked up. Lucy again assumes Jeremy, who is back in town and double-dating with Mike, wants her back and pretends to have a date. Mary is shocked to see Wilson moved back and goes steady with her former school friend Corey Conway. Simon gets permission to let his hot senior date Maria 'help babysit' and gets her cute kid brother Jake to spare Ruthie dateless embarrassment.