Just as I was pregnant with my daughter Rio, the man I was dating at the time, who was supposed to be my husband, disappeared without a trace. For the past 10 years, I worked desperately so that my daughter wouldn't suffer because of being a single mother. After graduating from university and getting a job, marriage, a bright future awaits my daughter. One day, I suddenly had sex with my daughter's boyfriend. Contrary to my love for my daughter, I couldn't control the desires I had suppressed until now, and an electric current ran through my body, and I was overwhelmed by a numbing pleasure...