With his son's wedding approaching, Liu Guangcai publicly humiliates and dismisses construction supervisor Chen Jianping to save 500 yuan in daily labor costs, boasting that he can finish the newlyweds' house without him. But soon, one construction mishap follows another: the plumbing and electrical systems become blocked, walls collapse, and the workers go on strike. Even his future in-laws come knocking! Meanwhile, the dismissed Chen Jianping uses his exceptional skills to solve problems for other clients, earning an increasingly stellar reputation as major business owners compete to hire him. As the wedding house turns into a complete mess, Liu Guangcai finally realizes just what kind of person he drove away. Years later, the construction supervisor he once scorned for earning 500 yuan a day makes a remarkable comeback and becomes the head of a construction company!