Everyone knows that Gu Hanyan is the most useless son-in-law in Jiangcheng. Three years after getting married, my wife slapped her in the face, poured boiling water on her, and shut her down in the utility room. Even her sister, who was critically ill, asked for medicine, but she said "the equipment is locked" and ended her life. The whole internet called him a waste, but he never defended himself. No one knew that his identity as the former captain of the special forces was to fulfill a promise he had made in exchange for his life. He guarded her life while she destroyed his sister with her own hands. It wasn't until the day he left home that the big men from the military, political and business circles in Jiangcheng stood up and said to her: "Mr. Yu, you are not worthy of him." Only then did she realize that the person she pushed away with her own hands was the only person who could save her life. When the truth was revealed, it was too late.