When Chet the dog ... and his human partner, PI Bernie Little, are approached by a down-and-out older man with a cardboard sign at an exit ramp, Bernie is shocked to discover the man is a former teammate from his high school baseball team. Chet and Bernie take Rocket out for a good meal, and later, Bernie investigates Rocket's past, trying to figure out what exactly went wrong. Then Rocket goes suspiciously missing. With his former teammate likely in danger, Bernie goes back to his old high school for answers, where much that he remembers turns out not to be true