In Bianjing, the capital of the Northern Song Dynasty, amid the prosperity of singing and dancing, a series of strange murders quietly occurred. Popular singing prostitutes in the city's vases "died without illness" one after another. There was no sign of struggle at the scene. The deceased was as peaceful as sleeping. The government was helpless. Rumors spread among the people that it was caused by the "flower-breaking hand". Shen Ke, the most inconspicuous pedestrian in Dali Temple, was assigned to assist in investigating the case. He is silent and unsociable, but he has a pair of eyes that can see even the smallest detail. Amidst the noise urging the closure of the case, he glimpsed a shocking conspiracy from clues. As the investigation deepens, a huge whirlpool involving palace secrets and lost legendary magic is slowly swallowing him up. Every time you get closer to the truth, you get closer to death. In this capital city where glitz and crime are intertwined, what Shen Ke has to do is not only to avenge the souls of the dead, but also to hold on to his own candle that refuses to be extinguished in this turbid world.