The darkness is the ladder, the prison is the classroom.
From the bloody rivers and lakes behind bars to the dark gold empire under the neon lights of the city, a young man is forced to learn the rules of survival on the edge of human nature.
When the master in prison teaches what he has learned throughout his life, and when the prison black market becomes the first battlefield, he understands that the real power is not within the high walls, but in the larger shadow network outside the high walls.
From underground banks to smuggling tunnels, from bar information stations to gang wrestling fields, every step is a life and death game with the former prison bullies and the forces behind them.
See how a young man with nothing can turn the gray order of Jiangsu, Zhejiang and Shanghai into a ladder for him to be crowned the underground emperor.
