Wei Rao, a young noblewoman, is forced to marry Prince Lu Zuo—who is in a coma at the time and on the verge of death. She forces Ah Chou, an ordinary girl who stands out primarily for her striking resemblance to Wei Rao, to take her place at the wedding ceremony. But precisely on the day of the ceremony, Lu Zuo awakens. Now Ah Chou must face Wei Rao, who wants her position back; Lu Zuo, who mistakes her for the treacherous Wei Rao; and the prince's entire court, which is riddled with traps and conspiracies.