During the exam season, Hitomi decided to take care of her husband's nephew Hiroshi. Hiroshi, who she met again after a long time, has grown into a strong young man who can't believe his eyes. On the other hand, Hiroshi still yearns for the beautiful Hitomi. The relationship between men and women, which is as far apart as mother and child, begins to go crazy due to an SM magazine purchased by her husband. Unconsciously drawn into the sensual world of SM that they had never known, they secretly repeat the act even though they know it's a bad thing
