Everyone is shocked when Ed is attacked by an armed gunman. In the ensuing chaos, Casey disappears, upsetting Mary. Meanwhile, an emotional Delinda admits her feelings for Danny, to her fiance Derek's dismay. Elsewhere, Sam travels to Hawaii to contend with a whale who won't vacate the Montecito's Hawaiian Villas and is discovered with a dead stripper in his villa. Sam encounters a conniving realtor who has her own agenda with Sam's whale. Sam also has to deal with Vic Manning, Casey's litlle brother, whom she once had a fling with, but he's still carrying the torch for her.

Ed returns from a secret trip to Morocco with shocking news about his past. Meanwhile, Danny and Delinda's romance continues to heat up. Elsewhere, Mike travels to Hawaii to help Sam with her whale problem. Mary is upset with everyone when she discovers she is the last to know about Danny and Delinda. Ed, Mike, and Danny take care of Ed's problem once and for all to get the CIA to leave Ed alone.

Sam returns to Vegas and finds herself in money trouble after three of her clients stiffed the Montecito. Ed connects her with Warren Pemberton, who has unorthodox, but effective means of collections debts from dead beat gamblers. Meanwhile, Ed helps a man prove to his wife that he's a tough guy.

Vegas heats up as Boston Medical Examiner Jordan Cavanaugh and police officer Woody Holt come to the Montecito hot on the trail of a murder and a missing rare violin. Meanwhile, the Montecito is dealing with its own missing items. Someone has robbed the casino's safe deposit vault containing potentially priceless items. Among the items, the rare violin and Lawrence Taylor's favorite superbowl ring. Amidst the chaos Danny and Delinda try to figure out the best way to tell Ed that they are moving in together.

Ed and Danny only have twelve hours to save Delinda from her kidnappers, so they must steal 50 million dollars from the Montecito or she will suffocate after being buried alive. Meanwhile, at the Montecito, Mary deals with a new casino mascot's most inappropriate behavior. Sam cope with two moronic lottery winning whales who are running amok in the casino, more interested in playing tag than gambling.

Ed and Danny attempt to rescue Delinda from the kidnappers. Meanwhile, at the Montecito, Mike and Sam try to figure out if a Buddhist Monk's major winning streak is just a scam. Elsewhere, a flu epidemic hits the Montecito and Mary tries to cover for the many employees who call in sick. The flu couldn't hit at a worse time given that a critic from a high-end travel magazine is staying at the Montecito.

A black-booked mobster purchases the Montecito's million dollar wedding package for his daughter, which includes a fully catered wedding, luxury treatment, a Harry Winston engagement ring and Wayne Newton. However, problems arise because Ed and Wayne Newton are on bad terms, someone stole the diamonds, and with many of the wedding guests allegedly members of the mafia, the suspect list is a mile long. Meanwhile, Sam hosts Sharkey Rosenthal, a whale who ran with the Rat Pack, nearing the end of his life. Elsewhere, Danny and Delinda are finding out that living together is not as easy as it seems.

It's Christmas at the Montecito and everyone reluctantly takes part in Ed's Secret Santa gift exchange. Meanwhile, Danny's car, his most prized possession, is stolen on Christmas Eve. Elsewhere, Delinda is eagerly planning her first Christmas with Danny. Meanwhile, Sam helps one of her favourite Whales get through the holidays by surprising him with an autographed photo of Elvis from his first Vegas concert and a private viewing of the travelling Elvis collection.

A very rare wine has been discovered in the wine cellar of the Montecito, which Ed sees a perfect opportunity to boost the casion's profile. Unfortunately, Mike realizes the wine isn't genuine just minutes after it is auctioned off for one million dollars. Meanwhile, a group of retirees checks into the Montecito for a soduku tournament but some of the women give Sam a hard time when they have a different idea of fun. Danny gets insecure when Delinda starts spending a lot of time with a new toy.

One of Ed's most revered former employees returns to the Montecito for her wedding anniversary, but her hubby raises Ed's suspicions. Meanwhile, Mary and Sam battle to woo different VIPs.

Ed, Danny and Mike make a bet to see who's the best security operator and who can find the most waste at The Montecito. Sam is on a mission with Polly, the Manicurist of the Year, to get Polly's ex-boyfriend back. Meanwhile, Mary is responsible for selling the last residential suite and she hopes to entice big money with a special performance by John Legend.

Ed must enroll in anger management classes, which leads him to find his inner peace. Mike tries to buy a condo, but has issues doing so. Meanwhile, Sam is annoyed when a basketball player she's hosting takes an interest in Mary. Elsewhere, Delinda tries to prove she's a good person by cooking food for the homeless, but ends up doing more harm than good in the process.

The Montecito prepares for a world-famous mummy exhibit, only to have it stolen before it even arrives at the hotel. Because of special circumstances, the authorities cannot investigate the theft, so Ed, Danny, Mike, and Delinda try to handle the crisis on their own, Mission Impossible style. Meanwhile, Sam is hosting Harris Lipsky, a boorish man with atrocious table manners. Harris seems to only get pleasure from paying people to do things they normally wouldn't do.

Things heat up when Sam's whale and his three wives arrive in Las Vegas, and Sam has to leave the foursome with Delinda for the day after her long-lost love wakes up from a 20-year coma. Meanwhile, Mike falls for one of the wives; Danny becomes jealous when he learns the whale's plans; and Ed tries to replace his housekeeper while Jillian is away.

Despite an unexpected death, Ed allows the company picnic and games to carry on. Mike is appointed the captain of the front of the house team and gets pumped up for the big day. He takes his role a bit too seriously and irritates everyone. Meanwhile, Mary testifies against her father.

Ed considers retiring and later thinks about buying the Montecito, much to the annoyance of Jillian. Meanwhile, Danny and Delinda's condo is broken into when Danny refuses to help out a gang lord. Meanwhile, Sam learns she owes millions of dollars in back taxes on her inheritance.

In the season finale, all hell breaks loose. The Montecito is in danger of being siezed by the IRS. Sam is kidnapped by a whale she poached. Mary plans to confront her father. Danny helps out a friend who is trying to avoid being deployed to Iraq. Delinda's life is endangered. The casino is robbed. Ed makes a choice that will affect everyone at the Montecito.