Construction CEO Monica Wells is thrown out by Ed for extreme rudeness to the Montecito staff. She files a 'sexual' complaint against Danny, whom she in fact failed to seduce while he was off duty but brought her, more drunk the him, to her suit at Delinda's insistence. It turns out legal help won't suffice, this problem is in Ed's league. Meanwhile Mystique's cash-flow results in a lunch experiment which proves hard to sell to chef Gunther or the guests.

Ed gets former Firm colleague Frank to help save a Montecito employee's illegal mother, Maria DiGiuseppe, who runs a restaurant, from racketeer Jerry Garret. However, Ed can only control his violent temper by promising him a date with Montecito math wonder Sarasvati Kumar, then gets to the boss behind the screens. After Sam encourages a new gambler, Danny and Mike clean up her mess when it turns out Eric Nesterenko is just an alias of youngster Kellen Phillips, who paid nobodies to cash in a fortune in chips for him to invest illegally in stock with Ron Redfield in San Diego. Delinda and Nessa rival for the attention of Fear Factor (dare game show) host Joe Rogan.

Ed Deline tells Danny McCoy that Detective Luis Perez has been killed in Iraq, informs his loved ones together and tries to correct one of his cases, probably a miscarriage of justice against Richie Betts. Mike must help casino guest Mertens to a whore just before his wife's arrival, so he takes him to Kitty ranch, then is sent back to retrieve his wedding ring, in vain, then must try to get a replica stat. Mary Connell must testify in court against Johnny Moya; the County prosecuting officer turns out to be her romantic admirer Jake Porter; they find a way to spare Moya a strike three life-term. Porter helps Danny to crucial evidence.

The Montecito experiences several financial perils. Ed Deline worries about chip cheaters who already got away with $1,200,000, and orders to divert owner Monica's attention -she hasn't even mastered the essential element of fun- to a gambler who seems to keep winning honestly, already for $300,000, while he and Mike trace all people plausibly involved, the manufacturing company and even the whereabouts of only five machines which could do the job, the takes drastic action... Meanwhile Mike and Danny close in on pick-pockets. Danny's accountant insists he should sell his late dad's house, which increased in value from almost nothing to about $1,500,000, and thus discovers a recent picture on pa's bed-stand with a woman he doesn't know at all.

Danny McCoy finally has a buyer for his home, found by girl-friend Penny Posin, just like his late dad's last flame, Liz, who claims she was to be dad's bride. She hesitantly accepts the loan Danny offers to get her through medical bills until her insurance pays, but isn't it all too good to be true? Monica's 'other income' manager Olivia Duchey's cheap orders keep making everybody's job impossible; so Ed takes on the bossy owner, who lets Sam off the hook if she tells her brother Bobby he's dumped.

Casey Manning, the casino owner, has booked a porn convention but this is not exactly Ed's favorite crowd. Ed himself is in the new publicity spot shoots, with unnecessary personal complications. Casey's ex Sam's moaning finally wears his patience down enough to separate their assets and file for divorce. The national poker competition on TV is just the show for organizer Lance Marshall, but the Montecito boys won't accept an unknown schoolteacher outplaying the pros.

The Montecito may face a huge indemnification when a man states that a woman has drugged him and stolen one of his kidneys.

While Danny hosts Monica's immature heir Norma Pitts, they find half a human finger in her shrimp salad: a PR nightmare for the Montecito buffet. Ed tells Danny to keep her happy. Overhearing lawyer vulture Mira Schleich offers to get Norma 'damages', Danny promises to make her dreams come true, but apparently that includes him. The cameras recorded immigrant kitchen hand Miguel Hurtado axing his own finger. His cousin Raul was to find it and settle for $10,000, the coyote ransom for his sister Maria. Whale Grimaldi insists on another host than Sam, till she throws him out of the Montecito altogether.

Picking up from where the last season left off, security realizes that a gun was fired in Ed's suite, as Danny and Ed's daughter realize they have deeper feelings for each other than either of them wanted to admit. Samantha realizes what trouble she's in when one of her high roller clients rolls into the hotel's beach front resort in Hawaii and rolls up a half a million dollar bill and threatens to leave it in her lap, along with the dead stripper in his room.

The mission laid before Ed comes to light, as he is picked to, once again, kill a man the CIA ordered him to kill 20 years earlier. Sam wraps up her issues in Hawaii with the help of Mike, and Mary goes off in everyone's face about Danny and Delinda's heated romance and the fact that no one told her about it.

Ed turns Samantha onto a guy who can help out her own paycheck by trying to retrieve some of the money that her high roller clients have skipped out on paying. Danny and Delinda discuss wanting to take their relationship to the next level. Mary decides to try her hand at stand-up comedy, and Ed tries to give someone a special birthday present.

Las Vegas PD detective Max Dillon arrests Danny of killing (still missing) Mary's dad, either alone or with her, until Mitch and Mike prove there must be another suspect. Sam survives her kidnapping by dumping Vince Peterson in flight, and her attempt to recruit whales as investors for the Montecito is fruitless, after cowboy AJ Cooper pays their tax arrears.

Mike's omission of his nuptials to his family prompts him to put together a wedding for his mother's sake, as well as his family, which prompts Danny to propose to Delinda. Sam's deceased ex-husband's brother shows up with plans to take ownership of the Montecito in his family's name.