Bud Haskins, disowned after marrying a girl whom his father, John Haskins, disapproved, decides to help three "professionals" crack open the safe in the elder Haskins' warehouse. Bud is unaware that the thieves are actually after a huge arsenal of sophisticated, unmarked weapons that have been secretly imported for sale. Bud is slain after helping the criminals burglarize the warehouse. Although S.W.A.T. is assigned to investigate the burglary-murder, John Haskins recruits members of a tough Eastern mob to find the killers of his son.