Dick Flynn was a second-rate director working for a second-rate studio, cranking out fourth-rate science-fiction movies. In those days of 3-D glasses and "tingler" electrical devices built into theatre chairs, what a film needed was a gimmick. Flynn's latest was a special set of polarized glasses that would "let theatergoers see the killer, even though he was invisible to everyone else!" He called his new film "Invaders From the Fourth Dimension" after the invisible dimension where his monster lived. Little did he know that a real monster from beyond was stalking Earth. An alien hunter-a Predator-had landed nearby and was going on safari for humans. Usually, these monsters employ a cloaking device that makes them invisible, but Flynn's glasses actually let a small boy see the Predator's approach. Now this boy and the science-fiction schlockmeister must somehow save a world who thinks it's all just another gimmick!