Young Winnie Foster, stifled by the formality of her proper life and domineering mother, escapes into the woods only to get lost. Soon she happens upon Jesse Tuck -- a boy full of life and adventure who's unlike anyone she's ever met -- and falls in love. The Tucks, a kind and generous family, have a powerful secret -- a spring that holds the magic of everlasting life. And now Winnie must choose to live life as she knows it or drink from the spring.