Ten-year-old twins Ruby and Garnet dress alike and wear their hair the same way, but they have very different personalities. Ruby is funny and outgoing, while Garnet is sensitive and shy. When their father buys a bookstore and moves the family to a new town, Garnet adapts well to the changes, while Ruby feels betrayed, and stops speaking to Garnet. How can the twins find a way to accept the changes in their lives and remain friends?