Dr. Becker's back goes out on Christmas Eve, stranding him in a holiday nightmare. Trying to cut through a crowded department store on Christmas Eve, Becker stumbles into a Christmas display and knocks his back out, leaving him immobilized in Santa's Village. While the same grating Christmas tune plays over and over again, Becker waits for the paramedics and lives out his worst nightmare as he is assaulted by toy trains, cheerful pandas and really irritating kids. Meanwhile, Reggie decides to one-up an annoying woman who collects presents for orphans by organizing an unusual toy drive at the diner.

John and Nelle defend her father who was fired from his job as a teacher because he claims he's Santa Claus; Ally feels threatened when Larry's ex comes to town;Richard and Ling lip synch at the office Christmas party.

At the same time, Sean is stuck in traffic in front of the Hilton Hawaiian Village. He sees something that makes him catch his breath: a woman that resembles his ex-wife, Maggie. Just as they see each other, his Nextel starts chirping. Crazy Bob has found the body of the husband and dragged it to shore. Sean immediately rushes to the scene. Leigh tries her best to perform artificial respiration, but it's too late. The man is dead. Strangely, his windpipe has been crushed. Leigh runs off to find Sasha, and catches her in the midst of a torrid embrace with Sergio, a "friend of the family". Leigh is immediately suspicious of what she has just seen, but Sean reminds her that they are lifeguards, not policemen, and to leave the detective work to the pros. Arriving at the scene of the crime is Maggie. She tries to talk to Sean, but because of the investigation, he can't talk to her at that moment. Instead, they agree to meet at a bar later. Once again, Sean's work has taken precedence over h

A battle of who got the cheaper gift begins; Lou Ferrigno moves next door.

Tonight, radio personality Ira Glass.

Nicolás leaves his cell phone with Patricia. Betty tells the barracks about her trip to Cartagena and her walks with Michel, Mariana reads her tarot cards. Betty arrives at the restaurant to meet Daniel.