The killer Cheng Nianying was ordered to assassinate Qin Yurong, the legitimate daughter of the Hou Mansion, but he saw that the bride who committed suicide had the same appearance as him. Mrs. Houfu cried and told her that she was her lost daughter, and begged her to marry her sister. Cheng Nianying promised that he could escape from the killer organization and have family ties at the same time, so why not? Married into the royal palace, her husband Fu Yi is handsome and gentle, and her life of fine clothing and fine food makes her satisfied. But she knew very well that all this belonged to Qin Yurong. The real and fake bride was finally exchanged, and Cheng Nianying was in danger. Fu Yi, who had always been sick and weak, held a sword to the neck of the person behind the scenes and said cruelly, "No matter who she is, she can only be mine."