While thumbing through old comic books in his parents' attic, 30-year old Rich Hall remembers that the Junior Seed Sales Club of America still owes him a basketball from when he was eight. Rich then sets out on a journey across America to claim his prize, only to find that there's not much America left out there anymore.

Leo Kohlmeyer is a talking cat who inherits $5 million from his late owner and is looked after by the owner's in-laws whose two children, Bart and Veronica, learn Leo's secret that he can talk, while a bumbling, but devious, couple called the Rigsbys plot to kidnap Leo in order for them to gain the inheritance money for themselves.