In Longshan Town, the crime boss Long Chiang Nan and his steadfast bodyguard Yun Fei orchestrate a gun shipment from Lei Hu, a plan that is brutally interrupted by a faction led by Brother Jin. Jin snatches one gun and orders the rest dumped into the ocean, then slips away to stay hidden with Rouge in her room at a brothel. Later, atop a bridge, Fan Ming Lau Kong helps Jin fight off Yun Fei and his men. When Jin asks for his name, Fan Ming keeps it simple, saying he is merely a passer-by.
Fan Ming heads to the Ye residence, where Yan Hong mourns her father, Mr. Ye, who was killed by Long for refusing to join the gun-smuggling racket. There he is reunited with their friend Xiaohong and Xiaohong’s sister, all drawn into the danger swirling around Long’s operation.
Jin attempts a high-stakes sale, handing the gun he took to Lei Hu for a handsome price and setting up a genuine-looking gun deal. But Lei Hu’s men arrive to collect the cargo only to discover empty boxes bearing Japanese labels. Jin and his crew defeat them and walk away with their money, leaving Lei Hu and his men frustrated and empty-handed.
Meanwhile, Yun Fei informs Long that Fan Ming has arrived in town, and he vows vengeance for the killing of one of his sworn brothers. Long orders Fan Ming to be captured. To pressure Xiaohong, Yun Fei and his men kidnap Xiaohong’s sister, coercing Xiaohong to lie to Fan Ming that Long is arranging a gun deal at White Stone Hill. Jin’s assistant Guy Ng Ming-Choi warns Jin about the White Stone Hill meeting, and Jin and Guy show up to stake their claim. In a brutal turn, Yun Fei and his men kill Xiaohong, Fan Ming and Guy while Long watches.
Jin then goes to the Ye residence and informs Yan Hong about Fan Ming’s supposed death, urging her to seek safety with him. He manipulates the situation further by convincing Rouge to hide Yan Hong in her room at the brothel, paying the keeper to reserve the space.
Long presses Lei Hu for the guns, but Lei Hu insists Jin still holds them and arranges a late-night visit in which Rouge and other girls from the brothel are brought in to entertain Yun Fei, Long and Lei Hu. Yan Hong, disguised as one of the girls, slips into Long’s residence and launches an attack on Long, only to be repelled by Yun Fei. Rouge makes a move against Lei Hu as well but is defeated.
Police Chief Ma is shown apologizing to Fan Ming for past failures, and Fan Ming remains resolute as the investigation continues. A message arrives declaring Jin’s assault on Long’s residence, and Fan Ming and the police rush to the scene. Jin kills Long and Lei Hu, then confronts Yun Fei; after a lengthy duel, the two men end each other’s lives. When the dust settles, Fan Ming and the police arrive to find the two corpses, marking a violent and decisive turn in the power struggle.
