Ikumi is 55 years old. One day, while working overtime, the president makes a pass at her, asking if she wants to make her a full-time employee. One day, while working overtime, the CEO makes a pass at her, asking if he can make her a full-time employee, and they end up having sex. The stepson happens to pick up his stepmother and witnesses the scene. When the stepmother returns home, she has relations with the stepson.