John Knox receives a phone call from a detective, alerting him of his sister's brutal murder. Upon inspection of the body, grotesque branding is discovered and reported to be the mark of a new crime ring in the area that is known for kidnapping young girls and forcing them into slave labor to package and distribute drugs.
Unsatisfied with the efforts of the local police force in finding his sister's abductors, demolition worker John Knox sets out to find the drug ring on his own. Armed only with his sledge hammer and his indomitable will, John works his way through street suppliers all the way up to the drug's source, a huge and evil man named Gothard.
Smashing onto the scene via his construction truck, John boldly enters a fortress guarded by machete toting bad-guys and fire breathing goons, in his effort to save any other abducted women and shake the drug ring down to the ground.