In the grimy, claustrophobic corridors of a spaceship, an alien creature, a grotesque amalgamation of flesh and machinery, stalks its human prey. The monster's hunger is insatiable, its desire to mate and merge with anything organic overwhelming. As it corners a lone, terrified survivor, the creature's tentacles and phallic protuberances writhe and pulsate, ready to violate and impregnate. The human, desperate and cornered, must use their wits and whatever weapons they can scavenge to fight back against this extraterrestrial onslaught.