Maika Asai is a married woman whose husband is away on a work assignment, leaving her to live alone with her son. One night, her son invites his friends over to study and stay the night, one of whom accidentally witnesses Maika in a private moment. Unable to restrain himself, he makes a move on her and ultimately takes her. Soon, another of the friends joins in, and their youthful desires relentlessly overwhelm her. Though Maika tries to resist, her heart wavers as she rediscovers the pleasure of being a woman—something she hasn't felt in a long time. Gradually, she finds herself unable to fight the pleasure, and begins to crave their presence. An intense triple penetration scene unfolds, leading to a shocking and unforgettable climax.