Hunter of the Black Alley

My name is Liang Xu. I'm a former police officer, and I'm also a hunter of criminals in the dead of night. A case lands Liang Xu in trouble with Yuncheng's powerful elite, costing him his position as a police officer and putting him behind bars. Now that he's out, what path should he take? Should he stick to his principles, or go along with the crowd...?