The former princess Shen Qianyu, who had been dormant for ten years, transformed into Lin Wei, the daughter of a wealthy Jiangnan merchant, and came to Beijing to seek revenge. She originally wanted to use her status as a princess as a cover to manipulate the chess game secretly, but because of the "vests" that accidentally dropped one after another, she was forced to "drop the code" crazily in front of her enemies. When her identity was finally revealed, she discovered that the man who had been acting with her was the one who had the deepest secret.