The residents try to impress Jackson's mother, Catherine Avery.

Derek encourages a hesitant Meredith to work with him again in neurology. When she complies, she listens as Derek is talking to a patient, who excitedly tells him about how she passed out in the middle of a big job interview. They're going to remove a cyst that's causing seizures. There is also a benign tumor that they aren't going to remove. Just as the procedure is past the opening skull stage, Derek is called to another OR where Morgan's baby is suffering from a brain bleed. He tells Lexi and Meredith to carry on. A slight bleed leads to another chunk of skull being removed. This opens up sight of the benign tumor. They decide to remove it because access is already present. Derek is incensed when he returns. It wasn't in the plan. When the patient awakes, she is unable to speak. Her parents threaten to sue. Jackson's mother, Catherine Avery, returns to Seattle Grace with a urology fellow, to replace a faulty bladder with one that Richard and Miranda have grown in the lab. During the procedure, Catherine develops an interest in Richard, becoming quite flirtatious. The fellow, Dr. Mara Keaton, was brought to be a spy for Catherine about how her son is doing. Jackson is forced to take her on a hospital tour. He is instantly suspicious of her motives and calls her on it. She admits that she is supposed to gather information on him. In turn, he advises Mara on how she can assert herself and gain his mother's respect. They try it out, defying her intent to take them to an awards banquet. The two of them trip off to find an empty on call room to get to know each other better. Richard is asked to the award banquet but turns her down at the last minute. Cristina becomes increasingly suspicious of Owen's every move. She finally corners nurse Emily, her prime suspect, and asks her point blank about sleeping with Owen. Emily says no. She uses a bit of flirting to get through long shifts. When Christina faces Owen, he admits he has been unfaithful to her. Alex has been working continuously to save Morgan's preemie. Callie watches Alex and Morgan work together and sees that Morgan is falling for him. He denies it. But when Morgan has her picture taken with him and the baby, you can see it in her body language.

As the fifth-years head off to San Francisco to take the most important exam of their lives there are some surprises along the way; Owen and Teddy continue to fight back at the hospital; Mark and Lexie reconnect; and Tommy's condition worsens.

Six hours after their oral boards, the fifth years relive their answers and worry about their chances. Back at the hospital, Bailey has to woo potential candidates for the hospital and Mark is startled when Julia makes a proposal about their future.

As Cristina begins to make new "friends" in Minnesota, Meredith struggles with whether or not to tell Derek about an extremely rare case she is working on. Meanwhile, Arizona begins work with her new prosthetist and tensions flare around work when Jackson's mother comes into town.

The survivors receive a final verdict about the plane crash. Meanwhile, Derek continues to undergo rehabilitation on his hand, Cristina and Owen enjoy their new relationship with each other and Richard tried to avoid Catherine's advances.

The crash survivors race against the clock to find a buyer for the hospital before Pegasus closes in. Meanwhile, the interns and other doctors at SGMW plan for what they believe will be their imminent departure while Jackson's mother continues to try to convince him to move to Boston.

The transition to new management has the doctors at each others throats. Matters become worse when Owen quits, leaving the OR board in complete disarray.

Callie makes a decision about her relationship.

Meredith struggles to balance her roles as a surgeon and a mother.

Richard is given a rare case for his birthday, given by Bailey. Catherine Avery returns to try to talk sense into Jackson for marrying April.

Callie and Arizona discuss having another baby, Derek has a hard time juggling work and family, Jackson and April have their first big fight and Christina attends the Harper Avery Award Ceremony. But is she going to win?

Derek's sister Amelia comes for a visit; Alex confronts Arizona and the rest of the hospital about his decision; Dr Webber finds out the truth about Harper Avery award from Catherine.

Cristina must head to Zurich soon but she is unprepared to leave behind her life in Seattle. Fear runs amok throughout the hospital as an explosion in a shopping mall results in a mass casualty situation.

Meredith tries to find a sitter so she can go visit Derek, Amelia and Stephanie work together on a case.

Maggie gets upset when Meredith dodges her questions about DC; Bailey and Ben become concerned about Ben's brother after he is admitted to the hospital, and Dr. Herman starts to warm up to Arizona. Meanwhile, Richard begins to feels manipulated by Catherine.

Upon realizing that Owen and Amelia have been seeing each other behind her back, Meredith comes down hard on her sister-in-law causing Amelia to rethink things. Meanwhile, Catherine springs into action when a man is brought into the hospital after his wife seeks revenge on his cheating ways.

Jackson struggles to understand April's decision; Ben & Bailey discuss their future; a patient revisits Callie; Amelia tries to deal with her past.

Months after Derek's funeral, Amelia struggles with her emotions; April plans on returning; and a part of Derek continues to grow in Meredith's life.

The doctors must set their emotions aside and focus on a catastrophe.

As the doctors continue to tackle an unfathomable crisis, they are reminded of what is important and brought closer together.

The doctors from Grey Sloan Memorial Hospital spring into action to save the lives of two girls with a powerful story. Meanwhile, Meredith tries to cope with the fact that Amelia is now living with her, and Jackson prepares for April's return back to Seattle.

Flashbacks reveal the evolution of April and Jackson's relationship, beginning with their initial meeting, and the years-long process of one of Jackson's patients. Also, April finds out something life changing.

Meredith takes a step forward with Will but quickly regrets it; Maggie senses a disconnection with Andrew; and Amelia reevaluates her relationship with Owen. Meanwhile, Catherine comes into town and really shakes things up with April and Jackson

April and Arizona find themselves arguing in switched positions. Richard tries to stop Catherine interfering in others' lives. Meanwhile residents are motivated to compete for a great research grant.

Miranda is faced with the repercussions of Ben's actions; Miranda forms an advisory committee

Owen and Amelia take their relationship to the next level; Alex has a clearer view of his future with Jo; Callie and Arizona struggle with custody arrangements.

A crisis at the hospital cuts the wedding festivities short, Richard steps in with advice for Jo, and Meredith feels the burden of secrets.

A familiar face returns to Grey Sloan throwing many of the doctors for a loop. With Catherine putting on the pressure, Bailey has to make a decision about Alex while a tough ER case makes Amelia's bad day even worse.

The arrival of a new consultant puts the doctors on edge; Amelia and Owen bring their personal problems into the hospital; April explores some unfamiliar territory.

Maggie's mother unexpectedly visits; Bailey is forced to make a tough decision when an attending won't work with Eliza; Stephanie gets involved in Owen and Amelia's drama.

The residents get caught up in a conflict between attending physicians; April has a rough first day in her new role at the hospital.

Richard, Jackson, April and Catherine tackle a grueling trauma case intensified by hospital politics; Amelia finally faces her feelings about Owen; Meredith gets caught between Nathan and Alex over a patient.

Jackson and April go to Montana to perform a complicated surgery on a young patient.

Bailey and April work to fix things between Richard and Catherine; Eliza continues to pursue Arizona; one of Alex's previous patients returns to Grey-Sloan.

A dangerous patient escapes the hospital room, putting the doctor's lives at risk; Alex faces a difficult decision in his relationship with Jo; Meredith has big news for Nathan.

Harper Avery arrives at Grey Sloan, putting Bailey on edge. A familiar face from Meredith's past returns as a patient, and Amelia tries to manage a secret.

Amelia confronts a difficult situation; Meredith deals with the fallout from her conversation with Nathan; Maggie finds herself at an awkward family dinner; Jackson receives big news; Richard and Bailey search for the stars of tomorrow.

After a roller coaster car falls off the track at the county fair, the doctors at Grey Sloan tend to patients who spark memories about ghosts from their past.

The stress of managing the hospital and coming to terms with Ben's decision to become a Seattle firefighter pushes Bailey to her limits.

April is in charge of the new surgical innovation contest; the doctors are eager to start their projects; Catherine's old friend has a shocking idea for Catherine and Jackson; Meredith treats a returning patient who inspires her project.

Although he enjoys spending time with Maggie, Jackson must concentrate on the vaginoplasty surgery he scheduled with Catherine and Richard.

An agent from U.S. Immigration and Customs Enforcement searches the hospital for an employee; Alex's patient wants to leave the hospital to enjoy her final days, but Alex feels differently; Arizona treats Matthew Taylor's baby.

After a doctor accidentally brings in "weed" cookies, the hospital turns upside down

Crisis management is brought in to help Grey Sloan sort out allegations against Harper Avery; Alex and Jo are thrown for a loop when Nurse Olivia shows up with her son; Arizona spends more time with Sofia.

It's the day of Jo and Alex's wedding, but things don't go as planned.

The doctors at Grey Sloan Memorial vie for a new position. Meredith is seemingly distracted and struggles to stay focused, and Maggie finds herself the keeper of a big secret while Amelia and Owen try to figure out their relationship. Meanwhile, Jo and Alex's honeymoon doesn't go exactly as planned.

Catherine is in Los Angeles getting the new foundation ready and summons Meredith and Koracick to visit for a confidential consult. Meanwhile, one of the nurses is 28 weeks pregnant and collapses at the hospital while talking to Richard.

When the power goes out at Grey Sloan, the doctors are left scrambling to save their patients' lives; Owen, Amelia and Teddy confront their complicated situation.

Meredith is troubled by Linc's nonchalant attitude. Once she has diagnosed Catherine, Maggie worried that Richard, Jackson and Catherine are not accepting the diagnosis. DeLuca get an advantage in the OR and Owen has some difficulties.

Amelia and Koracick take on a dangerous surgery on Catherine; Meredith is urged by Richard to visit her dad before his time is up.

Meredith gets more insight about her dating life with the help of a patient. Meanwhile, Betty reveals something on Owen and Amelia.

When Jackson throws a party to celebrate Catherine's surgery and those who worked to save her, literally nothing goes as planned. Meanwhile, Helen pays Alex and Jo a surprise visit on a record-breaking episode.

Owen and Teddy have to deal with the surprise arrival of Megan Hunt, who knows nothing about their situation. Catherine preps for her first surgery back on a war veteran who's not emotionally prepared for his procedure. Meredith worries about DeLuca operating alone with Richard.

Alex tries desperately to save his patient while he waits for a severely agoraphobic blood donor to arrive from London. Jo reveals to Meredith why she's been so down.

As fog begins to cover Seattle, the doctors must navigate through personal complications; Meredith and Alex attempt to save Gus; Levi talks some sense into a struggling Nico.

Meredith, Richard and Alex must deal with the consequences after Bailey fires them for insurance fraud; after disappearing in the fog, Jackson helps a man in a dangerous situation; Tom gets new responsibilities at the hospital.

A patient at the hospital is brain dead after falling into a construction site, and her two sisters must decide whether or not to keep her alive.

Meredith has a court hearing after skipping out on community service, while Bailey and Jo have a patient that Jo realizes is from the treatment facility. Richard and Gemma grab breakfast together and things go awry.

Catherine is back in town and has no idea what's been going on between Jackson and Maggie, while her relationship with Richard has become distant. Owen and Amelia treat a woman who fell in the basement and quickly realize that there is more to the story; and Maggie is shocked to learn about some of Richard's relatives who are seeking help.

Jo becomes a safe haven volunteer and gets a call that a baby has been dropped off at Station 19. Meanwhile, Meredith moves forward with her life after facing the medical board. Jackson takes a big step in his budding romance with Vic, while Bailey and Amelia swap pregnancy updates.

Richard finds out Maggie quit Grey Sloan and is concerned about how she's handling the death of her patient who was her estranged cousin. Bailey returns to work after taking some personal time off, although Koracick doesn't make her first day as easy as she'd like. Meanwhile, Meredith thinks she might miss DeLuca, and Amelia has an update for Link on her pregnancy.

Jackson creates an uncomfortable situation when he invites his new girlfriend to what he thinks is Richard and Catherine's anniversary celebration; Levi brings Nico on a trip to visit an ailing family member.

Bailey and Ben face a huge, life-altering decision, while Meredith and several of the doctors reflect on the past.

Richard preps to present his PATH pen at the LA Surgical Innovation Conference but becomes distracted by his issues with Catherine. Maggie and Teddy run into people from their past at the same conference, while Hayes relives moments from when he met his late wife.

Owen and Link treat an older woman who wakes up from surgery and can't stop singing, while Teddy helps Koracick stay afloat after an estranged loved one from his past comes to the hospital looking for help. Meredith, Bailey and Maggie focus their efforts on a difficult patient with a tricky diagnosis.

Link tries to convince Amelia to take it easy during the final stage of her pregnancy. Hayes asks Meredith a surprising question, and Owen makes a shocking discovery.

Bailey finds herself in the middle of an argument with patients' families as they await news about their children who were injured in a fire. Winston surprises Maggie, and Amelia and Link try to have some fun as new parents. Teddy learns her colleagues know more than she may like about her relationship woes with Owen, and Richard and Koracick go at it.

As traumas and pressure mount, Grey Sloan doctors try to find a path forward, and Richard questions his faith. Meanwhile, Jo, Link and Jackson play an unconventional drinking game.

Both a mother and daughter are in critical condition and fighting over the last ventilator. Meanwhile, Hayes' sister-in-law ends up in the hospital with a kidney stone, and the house has a few more kids join in as Amelia's the babysitter.

Maggie is preoccupied with Winston while trying to treat a patient wounded in the Seattle protests. Meanwhile, Levi is tested by an emergency, and the doctors struggle to treat a patient who doesn't believe in COVID.

Jackson pays a visit to his father that helps set him on the right path.

Jackson shares his big news with his colleagues while Koracick and Levi fight to save a pregnant woman's grandfather as she goes into labor. Maggie keeps a watchful eye on Meredith as Bailey and Richard put off telling her about DeLuca.

It's wedding day for Maggie and Winston. Meanwhile, Meredith takes on a new role at the hospital, and Jo makes a life-changing decision.

Richard recruits Meredith and Bailey to help him launch a new program. Meanwhile, Addison's patient has complications from a procedure, and Jo helps a woman who goes into premature labor.

Schmitt faces the Morbidity and Mortality conference; Hayes says his goodbyes without revealing his real reason for leaving; Hunt's and Farouk's conditions each begin to improve after their surgeries; Jo acknowledges her feelings for Link.

Richard ponders his surgical abilities; Jo is charmed by her patient's brother; Megan pushes Teddy and Owen to talk out their issues; A pet python is the show's main squeeze; Grey is offered a promotion and more funding by Dr. Hamilton.

Bailey faces an unhappy Catherine who is facing audits for several of her Foundation hospitals. Meanwhile, Addison is back at Grey Sloan; tensions rise between Meredith and Richard, and Owen returns to work.

A former patient of Link's, Simon, is in the ER with his pregnant wife; and Bailey receives an offer from Nick.

A dinner party is thrown at the sister house in Nick's honor. Meanwhile, Grey Sloan Memorial receives a victim of a brutal hate crime.

The blood shortage at Grey Sloan Memorial continues. Meanwhile, Meredith makes a risky decision regarding a patient, and Owen's actions to help his fellow veterans come to light.

Bailey and Addison take a road trip to volunteer at a family planning center, but a patient's ectopic pregnancy leads to complications. Elsewhere, the interns begin to clue in in regards to Lucas's and Amelia's relationship.

Catherine returns to Grey Sloan for a surgical case that makes Lucas and Blue queasy; Amelia treats a patient with a family that's a little too supportive; Owen takes his medical future into his own hands, much to Teddy's surprise.

Addison makes a special appearance at Grey Sloan to welcome Bailey's new OB/GYN trainees. Maggie's lung transplant is derailed, and Nick bonds with Lucas - before the day takes a shocking turn.

With Levi's help, a patient celebrates a milestone; Jo processes a difficult diagnosis; Maggie and Winston decide their future.

Simone's wedding day arrives as Jo and Link's relationship hits a major turning point. Meanwhile, the attending surgeons fly to Boston, forcing a reunion between Nick and Meredith.

The attending surgeons fly to Boston, forcing a reunion between Nick and Meredith; Bailey gets a big surprise.

'\'\''

The crash survivors race against the clock to find a buyer for the hospital before Pegasus closes in. Meanwhile, the interns and other doctors at SGMW plan for what they believe will be their imminent departure while Jackson's mother continues to try to convince him to move to Boston.

The residents try to impress Jackson's mother, Catherine Avery.

Catherine is in Los Angeles getting the new foundation ready and summons Meredith and Koracick to visit for a confidential consult. Meanwhile, one of the nurses is 28 weeks pregnant and collapses at the hospital while talking to Richard.

Amelia and Koracick take on a dangerous surgery on Catherine; Meredith is urged by Richard to visit her dad before his time is up.

Catherine returns to Grey Sloan for a surgical case that makes Lucas and Blue queasy; Amelia treats a patient with a family that's a little too supportive; Owen takes his medical future into his own hands, much to Teddy's surprise.

Jackson creates an uncomfortable situation when he invites his new girlfriend to what he thinks is Richard and Catherine's anniversary celebration; Levi brings Nico on a trip to visit an ailing family member.

Meredith is troubled by Linc's nonchalant attitude. Once she has diagnosed Catherine, Maggie worried that Richard, Jackson and Catherine are not accepting the diagnosis. DeLuca get an advantage in the OR and Owen has some difficulties.

Meredith takes a step forward with Will but quickly regrets it; Maggie senses a disconnection with Andrew; and Amelia reevaluates her relationship with Owen. Meanwhile, Catherine comes into town and really shakes things up with April and Jackson

Owen and Teddy have to deal with the surprise arrival of Megan Hunt, who knows nothing about their situation. Catherine preps for her first surgery back on a war veteran who's not emotionally prepared for his procedure. Meredith worries about DeLuca operating alone with Richard.

When Jackson throws a party to celebrate Catherine's surgery and those who worked to save her, literally nothing goes as planned. Meanwhile, Helen pays Alex and Jo a surprise visit on a record-breaking episode.