Shen Zhao, the daughter of a famous general in the former dynasty, lost her family because her father was framed by powerful officials. In order to find out the truth, she disguised herself as a man and sneaked into the enemy's military camp to become a spy. In the enemy's country, she and the ruthless gatekeeper Gu Linyuan formed a rift due to a battle, and the two fell in love and killed each other between conspiracy and war. Shen Zhao relied on his resourcefulness to repeatedly defeat the enemy's conspiracy, but was caught in a dilemma after discovering that Gu Linyuan was actually one of the masterminds behind the murder of his father. He finally uncovered the conspiracy at the cost of a blood-stained battlefield, but also ended the sadomasochistic relationship with his own hands.
Not bad, I watched it several times