Sergeant David Callahan leads a task force of U.S. Marines on a failed mission. Five years later, working as an adviser to Thai Special Forces, he is forced to return to the Vietnamese P.O.W. camp he escaped years before, to fight a deadly duel.

An expedition enters an unexplored jungle to search for a legendary ruby.

An American soldier and a British intelligence agent try to track down an ancient relic called the Golden Cobra, rumored to have supernatural powers. An early Raiders rip-off directed Antonio Margheriti.