A surprise strike targeting the homeworld of the cybernetic, insect race known as the Mechi goes horribly wrong. The marines sent to destroy the bugs quickly find themselves in a battle to survive, isolated and alone. The misfits and war crazed worst of the marines must come together if they want find a means of escaping the planet and seeing Earth again. And things get even worse as one of them happens to be a serial killer who enjoys taking human lives just as much as he enjoys slaying bugs.