Tom Brand (Kevin Spacey) is a daredevil billionaire at the top of his game, but his workaholic lifestyle has disconnected him from his family, particularly his beautiful wife Lara (Jennifer Garner) and his adoring daughter Rebecca (Malina Weissman). On Rebecca’s 11th birthday, she asks for the gift she’s always wanted – a cat. Tom hates cats but he is running out of time to buy a gift, and so visits eccentric pet store owner Felix Perkins (Christopher Walken), who presents him with a majestic tomcat named Mr. Fuzzypants. On his way home 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 a family pet, and Tom begins to see his family and life through a new and unexpected perspective.