In “The Homega Man,” Homer faces a post-apocalyptic Springfield. Next, Bart attempts to become Superfly in "Fly vs. Fly." In “Easy-Bake Coven,” amidst a witch hunt in 1649, Marge and her sisters invent trick-or-treating.

Lisa struggles with solving a simple puzzle and fears that the "Simpson gene” is suddenly wiping out her intelligence. Homer stages a family reunion in hopes of introducing Lisa to some Simpsons she can respect.