Julien is endlessly energetic and precociously brilliant, but unable to bear the heartbreak of his mother's impending death. Sohpie is wildly imaginative, mischievous and determined to be different, yet in search of someone who'll both accept and love her. When they meet one another, everything changes. They begin what seems to be a child's momentary amusement. Soon, the game has become something far more larger and thrilling than the sad and disappointing world around them.