The Power of Three returns in this original storybook starring the very first Charmed Ones in a never-before-told tale from their childhood.Prue, Piper, and Phoebe were the first sisters to be called the Charmed Ones, the most powerful witches the world has ever known. But before they were charmed, they were just three little girls living with their Grams, and no idea of the power within them. When their constant bickering threatens the future unity of the Charmed Ones, their