Ozawa, the chairman of a large company, is worried about his 27-year-old son, who is still a virgin and a window-dresser at work. One day, he suddenly decides to arrange a meeting for his son, thinking that things might change when he gets married. After introducing him to several women from prominent families, his son takes a liking to Sumire, the daughter of a client company. However, Ozawa also has plans to make Sumire his own. He half-forces her to approve of his relationship with his son, and further forbids them from having sex before marriage. Gradually, Ozawa corners Sumire's sexual desire, and after a year of dating, he takes advantage of his son's business trip to put his plan into action...