In this remake to the original 1980 ecological horror movie, a secret government experiment turns nightmarish when genetically altered fish, bred as amphibious weapons, escape. Scientists believe them dead after a biohazardous chemical spill. Far from it, the creatures thrive as bloodthirtsy killers, threatening to annihilate a small coastal town by slaughtering the men and abducting the women for mating! Government scientists attempt to keep the creatures' origin a secret while trying to destroy them.

A hippie radical, Huey Walker has been a fugitive for decades, accused of a crime that he may not have committed. Finally apprehended, Walker is escorted to trial by uptight 20-something FBI agent John Buckner. While the two seem to be polar opposites, it turns out that Buckner may have more in common with Walker than is initially apparent, a point that is driven home when the pair faces off against a sinister small-town sheriff.