Marriage Maintainer, an occupation aims to repair marriage on the brink of broken. They manipulate, calculate, and dissuade. They are good at acting, excel in schemes and proficient in letting those who cheat on their partner to divorce without a penny. They face the darkest part of marriage and human heart and reveal to the world the most unexpected ways to handle it. But as the saying goes, He who lies down with dogs gets up with fleas. As the best mistress-dissuader of the new industry, Ning Keqin somehow ends up in her target’s bed. Will she be able to get away with it or will she fall?