Minna's life is turned upside-down when her dad's new fiancée, Helena, and her daughter, Jenny, move in. Jenny turns out to be horrible and Minna wants her gone! One night, Minna discovers a world behind her dreams in which the dreambuilders create our dreams on theatre stages, and finds out how to manipulate Jenny's dreams. But, interfering with people's dreams has dire consequences and, when Minna goes too far one night, Jenny can't wake up any more. Minna must enter the dream world one final time to face the dreams she has created in order to save Jenny and the family.