Fifth-grader Adam Hollinger looked forward to an ordinary summer: All-Star baseball practice, reading comic books, begging his parents for a dog, and avoiding his mischievous older sister. But things get crazy when the Hollingers adopt two corgi puppies and the team's star pitcher breaks his arm. Even worse, a serial burglar has been targeting the neighborhood, and the Hollingers' house is on the list. When the adults of the town become stumped, it's up to Adam and the puppies to set things straight.