Stan goes in search of a former KGB agent, Sergei, and is shocked to find that the man is his new next-door neighbor and that Sergei has already turned Steve into a communist. Meanwhile, Roger and Klaus head to France for a little R&R but their trip takes a turn for the worse when Klaus gets busted for drug smuggling.

Brian, afraid that he may have lost his last chance at love, searches for a former flame, Tracy. To his surprise, he discovers that he is the father to her son, Dylan. Tracy decides that Brian should raise the boy, and she drops him off at the Griffin's house. When Dylan runs rough-shot in the house, Brian's attitude towards parenting doesn't settle too well with Lois and Peter.

Bart joins the 4-H club and falls in love with a cow named Lou, but when he finds out that Lou is destined for the slaughterhouse Bart gives the cow to Mary, a fellow 4-H member, and her father mistakes the cow for a dowry. Homer and Marge come to the rescue to try and free Bart from his marriage agreement.