Ellie's scientist grandfather has discovered a way to reverse aging, and consequently has turned into a teenager--which makes for complicated relationships when he moves in with Ellie and her mother, his daughter.

From the Publisher: Is eternal life a blessing or a curse? That is what young Winnie Foster must decide when she discovers a spring on her family's property whose waters grant immortality. Members of the Tuck family, having drunk from the spring, tell Winnie of their experiences watching life go by and never growing older. But then Winnie must decide whether or not to keep the Tucks' secret-and whether or not to join them on their never-ending journey....

Young Winnie Foster, stifled by the formality of her proper life and her domineering mother, escapes into the woods only to get lost. Her magical summer begins when she meets Jesse Tuck. Jesse is full of life and adventure and Winnie falls in love. The Tuck family has a powerful secret-- a spring that holds the magic of everlasting life. Now Winnie must choose whether she wants to live life as she knows it or drink from the spring.

Serafina is summoned from her village to the magical cottage of a great aunt she has never heard of and learns that she is meant to become the new Baba Yaga, whose magical role is answering the first question any stranger might ask her with the truth.