Ten years ago, when Liangzhou was massacred, she was the sole survivor, and he was the heir to the official overseeing the troops. Ten years later, she returns as a poison doctor, intending to use the crown prince to take her revenge. What she doesn’t know is that the boy who dug her out of a pile of corpses back then has become the “Living Yama,” a man who now wields power over the entire court.