After losing her parents, Ai's long-vacant childhood home is set to be demolished in a week. Ai visits the old family home for the first time in ages to sort through belongings and clean up. She discovers an erotic novel she read during her student days in her room, and Ai indulges in masturbation as if she had traveled back in time to her youth. Suddenly, she senses someone's presence in the supposedly empty house! Though Ai couldn't hide her surprise, she becomes deeply entangled in a passionate affair involving tongue kissing with a young person squatting in the vacant home…
