Yuna is a married woman who has been married for several years after an office romance. Her married life was happy and she had no complaints, but... her husband started working overtime and was often away from home, and out of frustration, Yuna started masturbating. Recently, she has also started to feel someone's gaze on her in the locker room, so she goes to her boss for advice. After that, her boss tells her the true nature of the invisible gaze... She is shocked and confused by the unexpected culprit, and an unexpected nightmare attacks her.