Synopsis：The prince of Yan Kingdom, Yu Feichen, is married to Yin Nanyao, the daughter of the general who controls the country. The bride is a substitute killer who came to claim his life. As soon as he entered the palace, he met the prince who died violently and was about to be buried with him. The killer Yue Jian quickly contacted the second prince Ying in the organization, but he didn't know that it was actually the prince who killed him. The prince plays two roles: fishing and law enforcement. Yue Jian was dealing with the relationship between the Prince's Mansion and the organization, and he became more and more reluctant to attack Yu Feichen. Yu Feichen, who was looking at the overall situation with two identities, became more and more reluctant to expose Yue Jian...