Bai Dongfeng

In 1929 Shanghai, a string of brutal murders targeting showgirls uncovers a dark conspiracy tied to a powerful underground network. A forensic doctor, a sharp-witted detective, and the owner of a lavish dance hall form an unlikely alliance to expose the truth, risking everything to shine a light on the city's darkest secrets.

When Shuai Jiamo, who is obsessed with mathematics, stumbles upon a historical problem in Jinhua County, he was met with multiple obstacles in his attempts to correct the mistake, triggering a tension between various stakeholders.