In the summer of 1990, 14-year-old Trevor Riddell gets his first glimpse of Riddell House. The legendary mansion is built of giant, whole trees, and Trevor’s father --- in a trial separation with his wife --- wants to sell it. Trevor soon discovers the ghost burdened by the final wishes of the Riddell patriarch, Elijah: that the mansion is returned to untamed forestland as penance for the trees harvested by the Riddell Timber Company. Trevor’s willingness to face the past holds the key to his family’s future.

Enzo relays the story of his family --- which includes race car driver Denny, wife Eve and daughter Zoë --- who face being torn apart when Eve becomes ill. While struggling to hold them together, Enzo refines his plans to be reincarnated as a human. After all, being a dog severely limits his ability to express his huge heart and soaring soul to those he loves most.