After installing too many gadgets in his car, Homer drives it into the sea and is banned from driving. An increasingly harassed Marge must now do all the driving and, feeling stressed out, accidentally runs over Homer. Homer begins to wonder whether she did it on purpose and they go for marriage guidance - where Homer is told to do one unselfish thing to prove to Marge that he loves her. He duly complies by throwing a backyard barbecue for all their friends to come and show their regard for Marge.
—don @ minifie-1