After a nuclear war society breaks down into two groups, the evil Euraks, and the rebel Federation. A mercenary named Parsifal is hired by the Federation to infiltrate New York City, which is controlled by the Euraks, to rescue the only fertile woman left on Earth.
A plane crashes in the Amazon jungle, and its passengers must battle their way through cannibals, slave traders, wild animals and murderous piranha fish to safety.
A marine biologist, a dolphin trainer, a research scientist, and a local sheriff try to hunt down a large sea monster, a shark/octopus hybrid, that is devouring swimmers and fishermen off a south Florida coast.
