When Chang Xiaoyun, a 26-year-old policewoman, wakes up after being run over by a car, she has become the ailing baby daughter of the Grand General in ancient times. As the sickly infant recovers under the watchful eye of the royal court, the King makes a shocking decree - Xiaoyun is to be betrothed to the unfavored Prince Shu. But why does this Prince want Xiaoyun dead? Thrust into the dangerous politics of the royal court, Xiaoyun must use her wits and modern sensibilities to navigate this strange new world.