Louie takes out a female vending-machine mechanic--and then brags about their sexual adventures.

Nervous about meeting his girlfriend's parents, Louie hires Alex for moral support.

Louie and Zena are running into trouble in their relationship, and Zena dumps him after confessing that she's been dating Dwight, a bartender at Mario's. A depressed Louie tells Alex about it over drinks at Mario's, and when they suspect that Dwight is working the bar, Alex goes up to talk to him. Dwight then tells him that he's breaking up with Zena for getting serious too quickly. Alex shares the news with Louie, who sees an opportunity to get Zena back on the rebound. Zena initially rejects him, but after Louie gives a heartfelt speech about what Zena means to him, she takes him back, despite her better intentions.

Zena asks Louie to drive her friend Emily, who has just been dumped and is drugged, drunk, and upset, back to her apartment. While there, Emily comes on to Louie and he ends up cheating on Zena. Louie soon brags of his conquest, but Elaine gets so angry that she is about to tell Zena everything. Louie decides to tell Zena himself though, who understandably dumps him. Louie then shows up at Emily's apartment, but Emily is clearly regretting her indiscretion with Louie and is getting back with her boyfriend anyway, so she kicks him out quickly. Louie, back at the garage, is in tears because he is so upset at the turn of events. Alex, feeling sorry for Louie, gives him some sage advice on how to get Zena back. All of a sudden, Louie turns off the tears and Alex sees that he's been had and gets furious with himself. As Louie goes to talk to Zena (and presumably gets back together with her), he assures Alex that the tears were real.

Zena comes to the garage and announces she's getting married and asks the gang to let Louie know that she wants to speak with him. After telling Louie, he becomes convinced that she wants to get back together, and he meets her for dinner. Louie is crushed when she tells him she's getting married and wants him to attend, and he reacts very insultingly toward her. The rest of the gang goes to the wedding when Louie refuses, but afterwards he regrets not going and wishing her well, so he crashes his way on to their cruise ship (about to leave on their honeymoon). Zena and her husband are not happy to see Louie and before he can wish them well, Louie has a change of heart and starts choking the husband. After composing himself, however, he wishes them well, and Zena seems touched.