They seem to have nothing to do with each other, but they are linked together, but there is a hidden conspiracy.
Princess Junmu was imprisoned in this palace for more than ten years. She was told by her father that she would marry the Southern Kingdom when she grew up.
She wants to escape, escape from this deep palace, escape from a controlled life
Ji Yu, the general who had protected her when she grew up, stayed with her to make plans and help her kill people. However, Jun Jing informed the emperor of each plan, and the emperor ordered Ji Yu to be executed. She tried her best to protect him just as he protected her. Finally, she promised to give him his freedom. She married Du Man, the general who protected the country, and she left the palace. She also gradually fell in love with Du Man, who was not good at expressing. Little did she know that there was a pair of eyes behind her that kept staring at her. Jun Jing Under Duman's protection, she revealed Junjing's true face, which was like uncovering everything in her previous life.
Concept: Two demons fall in love with the same person for two lifetimes