Between the rusty steel factory and the bloody underground boxing ring, four old Northeastern ironmen who were forced into a desperate situation raised their fists. Chen Laohuai saved life money for his uremic sister, Wu San's butcher's knife was stained with the blood of gambling debts, the army beat him out of dignity at the cattle and horse market, and Zhao Laodao made a living by fortune-telling paper - until the Tielin Society cut off their way of survival. When the organ trafficking ledger behind the black boxing match was exposed, the gang of four fought back-to-back bloody battles in the mine tunnels, the betrayal of gamblers, the ominous omen of swallowing divination paper into the throat, and the case of burning after pouring industrial alcohol, they were all inferior to the multiple-choice question in the ring on the final night: Be a thug for capital, or burn a hole in this man-eating city?
