In a polluted future Venice researchers work to improve the situation. One day, unknown forces start killing them. A team of soldiers and a couple of civilians is sent to investigate. Soon, they encounter strange murderous creatures.

A group of recruits go through Advanced Infantry Training at Fort Polk, Louisiana's infamous Tigerland, last stop before Vietnam for tens of thousands of young men in 1971.

Horror gets Super Sized when Horny The Clown, the demonic mascot of "Hella-Burger," starts slashing Orange County teenagers with his meat cleaver from Hell.