High-schooler Grover Beindorf and his younger sister Stacy decide that their parents, Janet and Ned, are acting childishly when they decide to divorce after 18 years of marriage, so they lock them up in the basement until they'll sort out their problems.

Morris "Mud" Himmel has a problem. His parents desperately want to send him away to summer camp. He hates going to summer camp, and would do anything to get out of it. Talking to his friends, he realizes that they are all facing the same sentence: a boring summer camp. Together with his friends, he hatches a plan to trick all the parents into sending them to a camp of their own design.