All Ribsy wanted to do that ordinary Saturday morning was ride along with his boy, Henry Huggins, in the family's new station wagon. But a wild turn of events leaves Ribsy lost in a rainy mall parking lot, discovered by a rowdy group of little girls, and taken to a strange home where he's scrubbed with flower-scented shampoo and petted half to death.

Ribsy is desperate to find Henry, but he hits a roadblock when he can't pick up Henry's scent. Ribsy's quest to get back home will take him places he never imagined going--but if it reunites him with the boy who saved his life, every step of the way will be worth it.