Willie is king of the knock-knock jokes at summer camp, but to retain his title he must win the great riddle contest against Crow, who is best at everything.
While secretly building a roller coaster in the woods, twelve-year-old Hart tries to come to terms with his parents' divorce and his mother's new relationship with a television weatherman.
When fourth graders Evie and Megan start the Pet Patrol to solve animal problems, they soon have their hands full taking care of an army of homeless puppies.
