After blowing up in Homer's face, Marge is cast as the lead in a musical production with Ned Flanders as her love interest, but the more she plays the part, the madder she gets at Homer; Maggie attempts to retrieve her pacifier from the nanny.
Homer opens a snow plow business only to have his best friend Barney open a rival outfit, with commercials by Linda Ronstadt. Homer sends Barney into an avalanche, then feels guilty and saves his life.
Years of poor eating habits catch up with Homer when he suffers a massive heart attack. The family can't afford the triple bypass operation he needs from Dr. Hibbert, so they go to a discount quack named Nick Riviera.
Feeling sorry for Ralph, Lisa sends him a Valentine card. Having developed a crush on her, Ralph invites Lisa to go see the Krusty the Clown show. She accepts but after Krusty asks them if they are boyfriend and girlfriend, Lisa lets Ralph know that she just wants them to be friends.
A massive advertising blitz announces the arrival of something named "Gabbo". Eventually, Gabbo is revealed to be a Howdy Doody-esque dummy, whose sensational success causes Krusty the Clown's show to be canceled.