The Rebel Intruders (Chinese: 大殺四方; alternate title Killer Army and The Guerillas[1][2]) is a 1980 Hong Kong film directed by Chang Cheh, produced by Runme Shaw, and starring the Venom Mob.

During the Republic civil wars, waves of refugees arrive in a city controlled by Chen Chu-kwong (Lu Feng) who dispatches skilled martial artists Pan Peng (Wong Lik), Chang Hsiao-hu (Yang Hsiung), and Tang Yu-tung (Sun Chien) to respectively patrol the Northern, Eastern, and Western districts whilst he monitors its Southern border.

A Northern refugee and Black Tiger practitioner Wang Hsu (Philip Kwok) fights back against Chen Chu-kwong's men when they try to kill him for stealing a chicken.

Meanwhile, two other refugees from the North also enter the city: Northern Mantis practitioner Chi Chun-peng (Lo Mang), who is hired by Chang Hsiao-hu to train his men, and Yu Wen-san (Chiang Sheng), who is caught stealing food at one of Tang Yu-tung's restaurants but is taken in by the latter to work at a gambling den.

Pan Peng later intercepts a letter for Chen Chu-kwong revealing his plans to turn the city over to an enemy commander, but he nonetheless sides with him.