In common with all the previous "Treehouse of Horror" episodes, the show is made up of three self-contained stories; "E.T. Go Home", "Mr. & Mrs. Simpson" and "Heck House". The first story parodies the 1982 movie E.T. the Extra-Terrestrial. In the second story, which parodies the 2005 movie Mr. & Mrs. Smith, Marge and Homer Simpson discover that they are both secret assassins and have been hiding the fact from each other. In the final story, Ned Flanders, the Simpsons' pious Christian neighbor, asks God to give him the power to frighten the children of Springfield into changing their ways. He is transformed into the Devil (a role which Flanders had previously played in "Treehouse of Horror IV") and takes the children to Hell.