A military group led by Henry Silva and Woody Strode are bound by their honor, to execute their orders to kill as many enemies as possible.

Nick Hezard, a young con man, wants to avenge the death of a friend of his and organizes a swindle trying to cheat Robert Turner, an American businessman he thinks responsible for his friend's death. He succeeds in getting a hundred thousand swiss francs and uses them to carry out the second part of his plan.

A man is arrested and condemned to five years in jail for robbery. After serving his term, he is out for revenge on the gang members he considers were to blame for his arrest. The prize for this deadly fight is a large cache of diamonds.

Tony, a mob loan collector, is dissatisfied with his station in life. Though he dreams of one day being rich, he is stuck with the dead-end job of beating up borrowers who fall behind in their payments. After meeting up with Napoli, another mob enforcer who's just been fired from his job, the two hatch a plan. Together, they will con mob boss Manzari out of a fortune, after which they can retire and live in luxury. Manzari, however, is not about to let them go so easily.