郑潮安被母亲送去泰国,在一间冰厂做工人。由于母亲的叮嘱,好打不平的他常在当地恶霸和监工的屈辱下忍气吞声,幸得到工友石大哥的帮助。谁知老板以制冰为幌子,将毒品藏在冰里销售,知道这个秘密的工人均一个个被下毒手,连武功高强的石大歌也在与老板交涉时被残忍杀害。
看着工友接二连三的离奇失踪,工人开始对厂方产生怀疑,并进行罢工抗义。厂方纠集一帮打手,企图镇压工人的反抗情绪,郑潮安终于忍无可忍,使出快速凌厉的腿功,将打手一一击倒。郑潮安决心查清真相,但一开始就差点陷入老板设下的奸计。老板见事情败露,暗中派打手将余下的工人全部杀死,并抓走一名女工。
郑潮安深夜潜入冰厂电调查,发现被冰封的失踪的工友尸体,怒不可遏,与前来的打手展开了诛死搏斗,将打手和老板大子全部击倒。第二天,郑潮安来到老板家中,向心狠手辣的老板讨还血债,最后的决战开始了……
Cheng Chao-an,a Chinese young man works in an ice factory in Bangkok. The factory owner, Hsa Mi,is known as a prominent figure in the overseas Chinese society .But ,in secret ,he is an underground boss operating a huge chain of vice dens .One day several workers run into their boss's secret deeds and are never seen again. Cheng sets out to investigate. Hsa's evil deeds eventually come to light.Cheng finds drug parcels and even dead bodies of the missing workers stuffed inside the ice blocks ,in a fit of anger,Cheng cracks down on the set-up ,killing many racketeers.But his girlfriend is later found to have been abducted .And a deadly clash ensues at Hsa's quiet villa.