A group of heavily armed hijackers board a luxury ocean liner in the South Pacific Ocean to loot it, only to do battle with a series of large-sized, tentacled, man-eating sea creatures who have taken over the ship first.

Nick Gunar is a burnt-out, jaded and hard-up former mercenary who is having a difficult time adjusting to civilian life. At the end of his rope, he is hired by the Nitro Mine Corporation to strong-arm the natives of a South China Sea island into giving up their rights to its valuable mineral resources. Nick loathes the thought of another mission, but this seemingly easy job will earn him enough money to get back with his estranged family. He recruits some of his former mercenary buddies to help him with the job. The island people refuse to give up their land and Nick decides to help them fight the greedy corporation that hired him. As greed and treachery begin to unravel, Nick’s band of mercenaries choose sides.