Marge and Homer discover the house next to them is up for sale, and marvel at the extensive kitchen inside the house. After realizing the poor quality of her own kitchen, she asks Homer to hire a contractor. Not wanting to pay the price of hiring one, he decides to remodel it himself. While remodeling the kitchen, Homer unearths his old collection of Playdude magazines. After Marge sees them, he innocently tells her he kept them only for the articles, and she decides to make sure by cutting out all the nudes from the magazines. After this, Homer decides that they are now of no use, and throws them away, only for them to be found by Bart and Milhouse. After reading the 1970s magazines, they are inspired to renovate their treehouse. After Homer's attempts of remodeling the kitchen fail, Marge finally decides to hire a contractor herself.
Despite the contractor assuring that the renovation will be done in three weeks, it takes two years of renovation (though nobody looks any older). Marge's kitchen is finally remodelled, for the price of $100,000. She then cooks her first dish in the kitchen, which gets rave reviews from many Springfieldians, as well as Thomas Pynchon. At the Kwik-E-Mart, Marge encounters an advertisement for the Ovenfresh bake-off, in which the grand prize is being Ovenfresh's spokeswoman, "Auntie Ovenfresh". Under Ned Flanders's advice, she decides to enter the bake-off with her "dessert dogs" and she wins, beating Ralph's "Grilled crayon sandwich." At the bake-off, most of the competitors cheat by ruining Marge's dessert dogs on purpose while insulting her, so while alone in the judging room, Marge retaliates by tainting all of the competitors' entries with Maggie's ear medicine. This was witnessed by Lisa, who then loses her faith in her as a result.
Meanwhile, Chief Wiggum and other concerned parents talk to Homer about Bart spreading Playdude to the other children. Realizing that Bart has got the Playdude magazines he threw away, Homer decides to have a talk with Bart about the facts of life. After the talk, a horrified Bart quickly spreads the talk to Milhouse and the other children, horrifying them as well. Meanwhile, Lisa confronts Marge for cheating, but she defends her actions by stating that the competitors pushed her into doing so with their antics. At the bake-off finals against Brandine Spuckler, Marge considers cheating again, but then discovers a note from Lisa and admits to her foulplay, restoring Lisa's faith in her. Not long afterwards, the new Auntie Ovenfresh flour bag with Brandine on it comes out and her husband, Cletus mentions that she has left him for James Caan. In response, Cletus's friends ambush Caan at a toll booth and gun him down in a scene reminiscent of the death of Sonny Corleone, Caan's character in the film The Godfather. Lucky for him, he survives and complains about the scene.