Nevada state Senator Billy Cole, relatively happily married son of the state's U.S. Senator and a Marines mate of Danny McCoy whose life he once saved, is received like royalty, but shows Danny photos of a maid kissing him, made to blackmail him out of political life. Dan finds the non-casino maid suspicious on surveillance videos and brings in help, but after a CD is delivered which the pictures came from, digital enhancement shows it's a 16 year-old, Mindi Distassi; even her parents lost contact three months ago, but a single call back-number is enough to follow the trace, and get surprising answers... Ed Deline is shown photos suggesting Sam Marquez may have contacts with a drug cartel, so he tails her personally when she brings a brown bag to a ghetto family... After decades of 'boring' living safely, actuary Dan 'Flamin' Clayman has sold all his possessions on e-bay and is now staking the full $180,000 at the Montecito roulette, big publicity but if he loses the casino will look ruthless, however he even has a manager, Sandy Schultz, who sets up deals greedily...

Happy customer double $ billionaire Fred Puterbaugh returns to the Montecito announcing he wants to show his gratitude by taking Ed -he's busy, so Danny- shopping, but isn't content handing both 'trinkets' over $100,000, he decides to buy the Montecito... Talented magician Arnold Peters was to be thrown out for passing out fliers 'Ed Deline called me the best', inexact and totally out of context, but proves a great eye by catching on sight a crafty dice-cheater none of the staff was on to. With his honest $1,000 premium he shows apparent sports scores prediction talent, but his winnings get stolen in the hotel complex- Danny goes after the thief and his accomplice, while penniless Arnold gets a shot at two jobs in the Montecino... Sam must deal with a high-profile regular who pays for almost nothing himself but his bets, yet demands 'scam prices' for services to be dealt with ruthlessly..

Board key member Casey Manning offers manager Ed Deline a seat on the board of the Montecito after the take-over if he wins the buy-out from three competitors, to take part in a general make-over in light of the progressing Las Vegas competition, but warns his ex Sam that she'll have to become better to remain the 'new' Montecito's host; by his reputation most staff and even the building may be done away with; she offers him anything if he blows the deal off... Ed is told by a CIA agent from Langley that Nessa Holt's disappeared father Jackson sired a second daughter, Adanna from another family, who is in a London hospital, and insists to accompany her, but assures her dad must be dead, yet Ed knows there is more... Danny and Mike investigate a conspicuously behaving couple consisting of fake identity Mark George and Susan Welch, who was reported died in a car accident 16 months ago; they refuse a free luxury suite upgrade, carry a stolen gun but have a surprising explanation. Danny gets terrible news..

Remarks about Las Vegas's past evoke a dream in which Danny, Mike and the girls arrive in 1962 at the Jubilee, the later Montecito, with new boss Ed, a mobster. They not only take over but invent the modern all-in-one-site entertainment formula, combining casino elements gambling, hotel, restaurants and shops, in the process inventing their present jobs. That takes quite some convincing and arm-twisting, in the spirit of those days still using methods they now wouldn't even consider.

The Nevada gaming Commission questions Casey's license because of $3,000,000 missing from the Montecito books, from the last night before Monica bought the casino. Casey is cleared, Ed must find the thief helped by Danny, whose rough USMC instructor Sergeant 'Gunny' Burn shows up and 'enlists' himself on hotel staff. Meanwhile meteorology fan Mike's hero, the forecast presenter, works from the Montecito and needs a stand-in stat.

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.

'Twas the night before Christmas, and all is not merry. When three kids are abandoned by their mom, a "strawberry." Meanwhile, a Christmas elf commits Grand Theft Auto right in front of a staffer's nose.

When a report is filed by accounting, Danny and Mike look to Ed for a pat on the back, who only prompts them to work harder, and even bets them that he can do their job better than either one of them can. Mary tries to sell the last residence suite at the Montecido.

Jillian questions Ed's priorities when she finds out he's trying to purchase the Montecido. Delinda questions Danny's priorities when he's more caught up in trying to prevent a friend from being returned to Iraq than sitting down with her and finding out she's pregnant. Mike finds out Sam's plight, and Mary takes steps in helping her step-sisters' plight.

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.

As Cooper takes over ownership of the Montecito in a rather unique fashion, Sam recounts the events surrounding the lives of her fellow co-workers, while in therapy, including Mike's attempts to figure out how a gambler is cheating and how Danny and Delinda are getting along with the prospect of becoming new parents.

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.