On the wedding day, with red candles swaying, the concubine Su Tang lifted her hijab, only to see the groom Zhao Mingyuan standing with his hands behind his back, with no knot in his throat, he was clearly a woman. The Zhao family wanted her to be a shield to cover up the shocking secret of their mistress. Su Tang sneered and agreed, just to exchange for a safe meal - but just after the wedding night, the man in black pried open the window to look under. She pulled out the short knife under the pillow with her backhand and struck back sharply. The blade grazed the assassin's neck, but unexpectedly she found a secret letter left by her father: General Zhenbei's rebellion plan was secretly linked to the Zhao family. In the darkness of the house, countless eyes were fixed on her, the chess piece of the substitute marriage. Su Tang clenched the dagger and raised the corners of her mouth - thought she was a chess piece at the mercy of others? She decided to overturn the chess game and let everyone who played the chess game feel the backlash.
