Kanna, the sales manager at an office equipment sales company in Tokyo, was stressed out by the excessive expectations from her company, her demanding workload, and her strained relationship with her husband. In addition, she was troubled by her relationship with her incompetent subordinate, Yoshino. One day, however, she let her guard down in front of him, and to her horror, he pinned her down and discovered her masochistic tendencies. From then on, she was taken to an S&M hotel during her lunch breaks, where pain and pleasure were imprinted on her body, and she was trained by her subordinate to be an obedient female dog…