Billy is a young fighter whose sister Judith was hurt after a near gang rape. When he learns she must have surgery, crime boss Russell has Billy compete in illegal street fights. When Billy learns he may get killed, he quits but is later killed by Russell and his men, who were the ones responsible for Judith's accident. After his death, Billy must rely on one man to seek revenge for him: his best friend David. However, David must train in the martial arts before he can seek revenge. Davidy seeks guidance from the ghost of Billy as well as Billy's trainer and ally, Murphy.

A movie crew is shooting in Thailand when some military guys kidnap the female star. The crew decide to fight back to get the movie star while shooting their movie.

Two members of Greenpeace discover that a local factory sheds radioactive waste into an active volcano, which has created a terrifying creature that wreaks havoc in the area.

A group of Vietnam vets are sent to Southeast Asia to destroy drug-smuggling operations in the Golden Triangle. When they get there, they find that many of the drug gangs are run by other Vietnam vets.