Harper loves spending time with her beautiful kitten; Sammy likes to sit in the window, explore their apartment, and play in the yard. But when Harper and her family move in with her grandmother, everything changes. Sammy doesn’t feel at home at Grandma’s, and he misses the smells and sounds of his old house. So when he sees a chance to go back, he takes it—but soon discovers that home is more than just a building where you live.