The film follows the lost heart of young Grace, depriving her of her feelings and desire for life. In an attempt to have her heart back, Grace is thrown into a labyrinth by hidden forces, after she finds her heart at a "Lost and Found" tent in a carnival. While navigating her way through the labyrinth, Grace keeps running into her heart, but whenever she nears it, she is attacked by a ghost-like creature, and is forced to give up retrieving her heart. She continues to walk the labyrinth, until she reaches its center, where her heart changes direction.
