Henry Huggins makes a deal with his father--if Henry can keep his dog Ribsy out of trouble for a month, he can go fishing with his father. Ribsy does his best to make Henry lose the deal.

Ralph and Sylvia Nebula and their friend Mavis Goldfarb are bitter at being sent to a bogus weight-loss camp, so they decide to escape and find a way to take revenge on those responsible for promoting the idea that thin is better.

Thirteen-year-old Meatball, an overweight vegetarian, discovers that eating meatballs gives him the magic power of turning into anything he wants, and he uses this ability to fight his principal's diabolical plot to eliminate fun from the planet.