In Shanghai in the 1920s, the concession and the Chinese border intersected, and neon and crime coexisted. This is an era where "if you have a gun, you are the king". The Cheng family controls the lifeblood of the underworld, while the Shen family was once the clear leader in the business world. The collapse of the Shen family was not a simple business failure, but a malicious annexation targeting national industrialists.