Tom Brand (Kevin Spacey) is a daredevil billionaire at the top of his game. But Tom's workaholic lifestyle has disconnected him from his family, particularly his beautiful wife Lara (Jennifer Garner) and his adoring daughter Rebecca (Malina Weissman). Rebecca's 11th birthday is here, and she wants the gift she wants every year, a cat. Tom hates cats, but he is without a gift and time is running out. His GPS directs him to a mystical pet store brimming with odd and exotic cats- where the store's eccentric owner- Felix Perkins (Christopher Walken), presents him with a majestic tomcat, named Mr. Fuzzypants. En route to present his daughter with her dream pet, a bizarre turn of events finds Tom trapped inside the body of Mr. Fuzzypants. Adopted by his own family, he begins to experience what life is truly like for the family pet.