地球研究所向太空发离子光束，不料却把其它星球的动物及妖魔吸到地球来，最后还是透过星际鸭人把妖魔给打败。

Agents of an oil tycoon vanish while exploring a swamp marked for drilling. The local sheriff investigates and faces a Seminole legend come to life: Man-Thing, a shambling swamp-monster whose touch burns those who feel fear.
《类人体》（Man-Thing）讲述简单的正邪大战，而是一个令人毛骨悚然的恐怖故事：神秘的沼泽生物会追踪人类的恐惧，触之即死！