Alan is forced into taking care of Judith's baby when his ex-mother-in-law becomes tipsy; Jake blackmails Charlie after he accidentally runs over Chelsea's cat.
Alan takes a job working for Evelyn so that he can eventually move out of Charlie's place; Charlie attempts to close the rift between Chelsea and Jake.
After learning of his connection to Lynda Carter, Alan asks Walden to set the two of them up on a date, leading Walden to invite her to their house for dinner.
Janet has her eye on the bartender at the Regal Beagle, but her poor attempt at matchmaking results in the object of her affection going on a date with Terri.
When Angelino's daughter falls for Jack, he's forbidden to go out with her, and as she becomes more insistent, Jack must convince her that he's happily married.
Jack plans on serenading his girlfriend with a song outside of her apartment, but chaos ensues when he taps on the window of her less attractive neighbor.
When Jack fills in for Angelino's chef, he leaves a lasting impression on a satisfied customer-a mobster who insists on making Jack the permanent chef.
Larry uses Jack's name on a date that goes awry; the girl's brother goes looking for Jack, causing him to go into hiding at Cindy's grandparents house.
Larry, Moe and Curly join a woman haters club, but when Larry decides to go ahead and get married, Moe and Curly defiantly try to sabotage his honeymoon.
After an alien invasion overtakes Los Angeles, threatening its existence, a platoon of U.S. Marines is deployed to counter the attacks of the advanced UFOs.
When a reporter learns of a discovery involving the demise of Earth, he tries to rescue his family from catastrophic, natural disasters around the world.
Ray and Debra attempt to find some new friends for Marie and Frank in order to get them to leave them alone, but the new companions continue to drop by as well.
Alan suggests that Chelsea should get breast reduction surgery, and Charlie responds by kicking him out of the house; Evelyn allows Alan to move in with her.
After Charlie and Chelsea set their wedding date, he and Alan go out, only to awaken perplexed as the two of them are in the same bed with a strange woman.
Chelsea invites her gorgeous college roommate to stay at Charlie's after she undergoes a rough breakup, resulting in Charlie secretly hoping for a threesome.
When Jake's girlfriend goes out of town for the holidays, Charlie encourages him to hook up with an attractive girl he met at the beach, but Alan disagrees.
Jake attempts to woo his ex-girlfriend by writing her a love song; Alan and Herb try to keep their friendship hidden from Judith, knowing she wouldn't approve.
Alan ends up in jail after being involved in a bar fight, and Charlie becomes worried that Chelsea might be interested in the lawyer who takes the case.
Walden goes on a longer-than-expected date with an accident-prone model; Alan dates a woman who quickly shares surprising personal information with him.