While playing a heated game of Monopoly, the family gets into a fight and causes Maggie to call the police. The whole family is arrested and the story makes all the papers. A social worker is assigned to the case and attempts to get everyone to work together as a team and break out of their traditional roles. While on a retreat in the woods, they encounter heavy obstacles, but are ultimately able to overcome, work together and bond as a family. Soaking in the warmth of their new relations, they drive home but find two floozies standing in the driveway. Evidently the family riot story made the papers in Las Vegas and Homer and Flanders' Vegas wives finally track them down.
Ashamed and embarrassed, Marge kicks Homer out of the house, forcing him to sleep in the yard. His second wife decides to settle in, making Homer even more miserable. Eventually, Marge feels sorry for him, and the family decides to work together to get rid of her. Homer gets his trashy wife roaring drunk and gets Grandpa to marry her, annulling his own marriage.