In the thirty-eighth year of the Southern Qin Empire, the country's grandest annual festival is about to take place in half a month. Behind the peaceful singing and dancing, there is an undercurrent surging, full of murderous intent. A conspiracy accidentally uncovered a bloody old case, exposing human nature, desire, and power to the fullest. Two young men who were originally wealthy aristocrats and relatives of the emperor became deeper and deeper into struggles in the world and grudges in the palace. What is right and wrong in this world? What is good and what is evil? How can we cross people and yet be able to cross ourselves?