Shen Qingtang, the top spy of the Nanzhao Kingdom, was forced to replace his sister who died suddenly in order to carry out the top-secret mission of lurking in the Daqi Dynasty. Shen Qingtang was forced to marry Pei Xiao, the feared "Blood Rakshasa" and commander of the Jinyi Guards in Daqi. On the wedding night, the two test each other and are full of murderous intentions. While Shen Qingtang was maneuvering around the back house of a wealthy and powerful man, disguised as a fierce and straightforward personality, he was stealing secrets. Pei Xiao had already realized that his identity was suspicious, and he planned to use his tactics to set up traps. From mutual suspicion and fatal games, the two were forced to join forces to fight against court conspiracies and border invasions. In the midst of life and death, the two acted out fake dramas and secretly developed feelings for each other. When Shen Qingtang's ultimate mission clashes with Pei Xiao's loyal mission, how should they choose between the righteousness of family and country and deep-seated love? This is a deadly game with love as a bargaining chip. Let's see how the sassiest spy and the coldest killer work together to subvert the country and dominate the world side by side.
