Tom Brand (Kevin Spacey) is a major business tycoon, who distanced himself from his daughter Rebecca (Malina Weissman) and his wife Lara (Jennifer Garner). In a rush to get a last-minute gift for his daughter's 11th birthday, he goes to a mysterious pet shop run by Felix Grant (Christopher Walken) and buys a cat. On the way home however, Tom gets in an accident and finds himself trapped inside the cat's body. He is told by Felix he must reconcile with his family within one week or stay as a cat forever.