Friendships change, but they endure. When Girl brings home a ball of yarn, Cat quickly befriends it. They are inseparable. But Girl takes yarn away for a while, and yarn returns transformed. At first Cat doesn't like the changes, but soon finds that yarn has new qualities to admire. This is a laugh-out-loud story for anyone who's shared space with a cat. Young children will enjoy the silly illustrations and premise but may also recognize how difficult it is to accept change.