Office worker Jun'ichi constantly makes mistakes at work and is continually scolded by his superiors. He's also rejected by a female coworker he had feelings for, leaving him lonely and relieving his stress through masturbation. One day, he invites the kind and caring middle-aged cleaning lady to a hotel. After persuading her insistently, Jun'ichi has sex with her, but to his surprise, she accepts everything about him, gradually opening her heart to him. Touched by her warmth, Jun'ichi begins to develop new feelings for her.