Everyone is shocked, when Ed is attacked by an armed gunman. 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.
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 problem.
Sam returns to Las Vegas and finds herself in financial trouble after three of her recent clients stiffed the Montecito. Elsewhere, Ed runs into the wife of a high roller who thinks of her husband as weak and boring so Ed devises a situation, with the help of Mike and Danny, to show her husband how be tough. Meanwhile, a new Mary emerges from the fallout of Danny and Delinda's relationship when she decides to conquer her biggest fear.
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.
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 be buried alive. Meanwhile, at the Montecito, Mike and Sam try to figure out whether 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.
Jimmy "The Chin" Aversano, a blacklisted 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.
Its 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.
A very rare wine has been discovered in the wine cellar of the Montecito, which Ed sees a perfect opportunity to boost the casino's profile. Unfortunately, Mike realizes the wine isn't genuine just minutes after it is auctioned off for one million dollars.
One of Eds favorite former employees, Nicole, returns to the Montecito for her first wedding anniversary with her husband, Ollie. However, Ed is suspicious of Ollie and forces Mike and Danny to keep a watchful eye on him. Mary and Sam cannot come to an understanding of which guests are more important and fight for OK Gos time to woo the 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.
After certain events Ed is forced to take anger management classes which obligates him to reach inner peace. If he loses control one more time the Montecito might lose its gaming license. Sam gets disturbed when her host, a famous basketball player, gets interested in Mary. Mike wants to buy a condo but can't secure the deal. Delinda gets in trouble while cooking a dinner for the homeless when she wants to show what a good person she is.
The Montecito prepares for the exhibit of a world famous mummy only to have it stolen before it gets to the hotel. When the authorities cannot deal with the crisis because of special circumstances, Ed, Danny, Mike, and Delinda are forced to handle the matter on their own.
Sam's old love awakes from a 20-year coma. This makes Delinda the casino host for a whale visiting town with his three wives. Things complicate when Mike falls in love with one of the wives and Danny gets jealous about the intentions of the whale toward Delinda. Ed tries to replace his housekeeper when Jillian is out of town.
The Montecito suffers the loss of one of its employees, but in spite of that Ed allows the Montecito company picnic to continue. Mike becomes the captain of the "front of the house," a team participating in the picnic games and starts to train for the big day. Mary goes to testify against her father in court so Danny tries to support her emotionally knowing how much it's affecting her.
Ed starts to consider retiring and buying the Montecito. Sam inherits a fortune and has to pay several million dollars as taxes. Danny and Delinda's condo is robbed after Danny rejects to help a gang. Mike finds a childhood friend.
Mike finds out that Sam has been kidnapped by one of her whales. Meanwhile, Danny takes drastic measures to help a friend avoid being deployed to Iraq. Elsewhere, Delinda learns life-altering news for she and Danny.