Homer becomes addicted to a reality TV show called Storage Battles and decides to participate in a storage unit auction as a result. He wins the storage unit with $1000, outbidding several townspeople and elephant Stampy. The family goes through its contents to find it is full of women's clothes and muscleman magazines belonging to Grampa Simpson. Marge comes to the conclusion that Grampa is a closeted homosexual who was forced to be heterosexual through most of his life. Homer and Marge set Grampa up with Waylon Smithers, but the plan fails when Mr. Burns arrives and scares Smithers off. Marge then admits to Grampa that she thought he was homosexual, to which Grampa becomes enraged and Mr. Burns reveals that Grampa actually used to be an old-time Gorgeous George-type wrestler called "Glamorous Godfrey", whose radical fighting style was heavily despised by the wrestling fan community, forcing him to retire. Burns reveals himself to be Godfrey's biggest fan (and only living one); he then persuades Grampa to return to the wrestling scene, which Grampa does. Though he is again met with loathing, Grampa continues the act under Burns's manipulation.
Bart soon becomes fascinated with Grampa and starts mimicking the mannerisms Grampa uses in the ring. However, he also attracts hatred and it worries Homer and Marge, but pleases Grampa and Burns. Under Burns's supervision, Grampa and Bart partner up in a tag team wrestling match. Marge tries to appeal to Grampa, but he turns her efforts down. However, he changes his mind when he observes Bart harassing the audience and takes on another wrestling identity that he calls "Honest Abe" in order to convince Bart to stop his ways. When Burns protests against this, Grampa and Bart defeat him in the ring. Afterwards, the two retire from wrestling.