A frantic call for help from a remote research station on Mars sends a team of mercenary Marines into action. Once there, the Marines must use an arsenal of firepower to destroy a legion of nightmarish creatures. Based on the popular video game.

Gangsters aid the police when their leader's daughter is kidnapped and the ransom is a bounty of priceless diamonds. It is also learned that a plot is underway to distribute a deadly new weapon of war.