Buster isn't fluffy or pretty like other cats—he's a crazy orange cat with attitude. And Mr. Larsen is the exact right person for him. Every morning Buster and Mr. Larsen sit on their porch in the sun, and every morning Josh sees them when he walks to school. When Mr. Larsen goes to the hospital and Buster goes missing, Josh and his family look for that crazy cat everywhere. But if Buster turns up, Rainbow Street Animal Shelter will have to help him find another home. That's when Josh and his family realize that—sometimes—life can choose a pet for you.