Minna's life is turned upside down when her dad's new fiancée, Helena, and her daughter Jenny move in. Her new stepsister, Jenny, turns out to be horrible and Minna is frustrated. She wants her gone!
One night Minna discovers a world behind her dreams, where dream builders create our dreams on theatre stages. Minna discovers that she can get back at Jenny by manipulating Jenny's dreams. But interfering with people's dreams has dire consequences, and Minna goes too far, so one day Jenny can't wake up. Everyone says it's an accident, but Minna knows it's her fault. Minna must enter the dream world one final time to face the dreams she has created, in order to save Jenny and her new family.