Ning Wan, a Gu-wielding woman from Miaojiang, searches for the man she fell in love with after he saved her three years ago. Armed with nothing but a portrait, she marries into the Chancellor's household. Qin Zheng becomes suspicious when there is no blood on their wedding night, but he is trapped by the love Gu and can only be intimate with Ning Wan for the rest of his life. As he gradually falls for her, he relentlessly demands to know who the man in her heart really is. Ning Wan cannot explain herself, and a barrier remains between them. Only when Qin Cheng, Qin Zheng's twin elder brother, returns does the truth gradually emerge. Half of a broken jade pendant and a peace knot finally dispel the mist of confusion.