In the world of dreams, Reiko Mizukami (played by Akari Hoshino) fulfills her lifelong dream of becoming a teacher. However, an unusual phenomenon begins to affect her, leaving her in a perpetually drowsy state, regardless of the time of day. One day, she inadvertently falls asleep in the middle of her class, setting off a chain of surreal dreams that blur the line between fantasy and reality. These dreams proffer an alluring yet enigmatic world, constantly filled with tantalizing encounters. As Reiko becomes submerged in this seductive realm, she finds herself unable to distinguish between the dreams and her waking life, slowly succumbing to an intoxicating trap of eroticism and desire.