在这部毛怪惊情恐怖/科幻片中,一群在森林度假的青年男女突然遭到长毛野人的袭击，其中几个人被其残忍杀害，幸免于难的比尔决定复仇。当他千辛万苦杀死野人后，却惊愕地发现竟是人类变化而成的，而后一个惊天秘密展现在他眼前：邪恶的外星人与恶魔联合企图侵略地球！比尔孤身一人深入虎穴准备将外星人乘坐的飞行器炸毁，然而整个地盘已被外星人改造的活死人所占领，比尔只能背水一战，与丧尸群拼死搏斗……
A man and his daughter are attacked in the woods by what they believe is a Bigfoot-type creature. However, they soon begin to suspect that they may have stumbled onto a nest of aliens in a hidden spacecraft.
