The Simpsons throw a party, inviting all their friends from the neighborhood. Homer gets very drunk and behaves like a perfect lecherous ass. Very upset with his behavior, Marge signs them up for a weekend marriage retreat. Homer is distraught until he realizes that the retreat is on a lake and he'll be able to sneak in some fishing. Marge and Homer leave the kids in the care of Grampa, and Bart and Lisa immediately try to take advantage of the old man's gullibility. At the retreat, Marge and Homer have difficulty reconciling their differences, particularly after Marge catches Homer sneaking off to go fishing. At home, the kids throw a party which gets out of hand, prompting Grampa to start crying. Afraid they'll get in trouble, the kids begin to frantically clean up. Meanwhile, Homer catches a legendary catfish, General Sherman, but to prove his love for Marge he throws it back in the lake. They happily return home to find a clean house and chuckling Grampa, who had conned the kids into doing what he wants.