武田High school student, Grover Beindorf, and his younger sister, Stacey, have a problem. Their parents, Janet (Curtis) and Ned (Pollak) are going to get a divorce. Desperate, Grover and Stacey lure their parents to the basement, lock it up, and declare their intentions to keep them there until they reconcile. When their friends find out what they have done, everyone agrees that their misbehaving parents deserve the same treatment!