After a plane crash in the Philippine jungle, two men, one an avaricious killer who has come to the islands to search for a fortune in diamonds, the other an international adventurer, must somehow overcome their vast personal differences and desires to survive in the steamy wilderness.

Gunslinger Clayton Drumm is about to be hanged when he is given a chance to live if he agrees to murder Matthew, a miner who has steadfastly refused to sell his land to the railroad company. Matthew’s refusal is a major obstacle to the railroad’s plans for expansion.

Stuart Whitman is Shatter, an international hitman who is hiding out in Hong Kong after he has completed a contract out on an African leader. Shatter soon finds out that everyone wants him dead, including the crime syndicate, the cops and the brother of the African leader he killed. Shatter teams up with a kung fu expert (Ti Lung) to try to get the money that is owed to him. Various double crosses and fight scenes ensue.