Seven years have passed since she divorced her husband... It was tough for Sakiko to manage her life alone with her only son, Ichiro, so she received assistance from her boss, Yoshioka. After many years of living like this, one day Yoshioka suddenly asked Sakiko for something in return for his assistance. Yoshioka was too forceful and Sakiko ended up playing with her body... A few days later, Yoshioka came to her house again and asked for her body. However, Sakiko's son's friend, Akira, happened to be there and saved them from the scene, and the two of them became one...