Harper loves spending time with her gorgeous new kitten, Sammy. He likes sitting in the window, exploring their flat and playing in the garden. But then Harper and her family have to move in with her gran after she has a bad fall, and everything changes. Sammy doesn't feel at home at Gran's house. He misses the smells and sounds of the flat, his real home. So when he spots an opportunity to go back, he takes it. But Sammy soon discovers home is more than just a building, it's where your family are.