In the third year of Yongchang's reign, King Xiao Jue of Zhenbei had a bloodbath in the wedding hall on his wedding night, forcing Prime Minister Chu Yingwu to witness his childhood sweetheart die in the city tower. She was forced to marry into the royal palace after a failed attempt to swallow gold, but she blocked a poisonous arrow for Xiao Jue during a Turkic sneak attack and drank the poison of "Forgotten River" that was intended to kill him, completely forgetting her past.
After three years of lingering together, she only knew that he was her savior, but he offered her refuge soup when she was tempted. When her memory came back to life, she faced each other with swords, and was shocked to realize the situation within the game: he was the orphan of the former prince, she was the daughter of a traitor, and the one on the dragon throne was the real culprit who killed her brother and usurped the throne.
In order to find the truth, she married him again and changed from an abandoned piece in the chess game to a chess player. During the fight in the court, Lin Wanru, a witch from southern Xinjiang, returns with the "Lovesickness" poison. Turkic cavalry suppresses the situation, but Xiao Jue's life is hanging by a thread due to the strange poison in his body. When Chu Yingwu planted the "Tongxin Gu" with his heart and soul and tied it to his life, what he got in exchange was a strange look in his eyes after he woke up——
"Who are you?"
The candle shadows are deep in the mountains and rivers thousands of miles away, and the books are burned into ashes all night long. This chess game that began with conspiracy will eventually be based on sincerity, and in the flames of the overthrow of the dynasty, the answer that transcends life and death will be written.