An oceanic observation station is in desperate trouble after a sudden shark attack wrecked the oxygen supply. The accompanying ship, a coast guard cruiser, and other ships in and around the Bermuda triangle are attacked as well. The US Navy sends a submarine to investigate, but soon they too are under attack.

A rich actress who has gotten too old for leading roles employs a scientist who is working on a formula for eternal youth. The formula involves withdrawing certain fluids from the human brain. She takes the serum, but its unforeseen side effects turn her into a murderous monster.

In a post-apocalyptic world, a warrior wandering through the desert comes upon a group of settlers who are being menaced by a murderous gang that is after the water they control.

Five Army deserters wander the post-apocalyptic, post-industrial Los Angeles landscape, seeking shelter from an increasingly toxic environment and poisonous rain.

In a futuristic society, rebels fighting against a fascist state are aided by a group of roller-skating nuns called the Bod Sisters.