As a psychology major, I couldn't find a job. Occasionally, I had an idea and decided to start my work and career as a mistress detective. In many of the cases I work on, I have experienced too many marriage breakdowns caused by the involvement of mistresses, and the mistresses who caused the breakdown of marriages had various reasons and means. In this materialistic world, the happiness of marriage has really become the greatest luxury besides life. How should we find true responsibility, and how should we face the derailment of our significant other in our souls and sexual intercourse. When I finally closed the shop that I depended on for my survival, there was still a bustle of people in the distance.