Homer tries to take the kids (Bart, Lisa Rod & Todd) to a movie; meanwhile Ned has taken the seniors for ice cream to celebrate Jasper's birthday. With all the kid friendly movies sold out, Homer (on Lenny's recommendation – he's in the movie) takes the kids to see "The Re-Deadening" a horror film that really scares the children. So much so that Bart and Lisa begin hearing noises from the attic. They try to investigate, but their fears scare them out of the attic.
They get Homer to lead an investigation into the attic and they find that Artie Ziff has been living there. Ziff tells them why he is living in their attic, his Internet business failed and he's lost everything. He wants to stay there and promises to be on his best behavior until he gets back on his feet. Artie stays, but Marge sees a news report that the SEC is looking for Artie Ziff. Meanwhile, Artie is playing poker with Homer and his friends. Artie puts up 98% of his remaining stock to make a bet and Homer wins the pot, just as the SEC sweeps in to arrest Ziff.
Homer (as majority stockholder) is taken into custody. Homer is put on trial and sentenced to ten years in prison. Marge tells Artie that the only reason no one likes him is because he only thinks of himself, which he soon begins to realize and after a night of passion with the only Bouvier sister (Selma) he can have he Ziff turns over his corporate books and Homer is exonerated.