Mikoto was preparing to meet her friend Sane one morning when she noticed something strange and surprisingly familiar in her bedroom - it was another version of herself, straight out of her dreams! With the real Mikoto and Sane's guidance, dream-Mikoto discovered the wonders of the world outside her dreams. However, her crossover from the dream world to reality created an opening for other dream creatures to follow. Will they be able to seal the doorway before anything untoward occurs?