In the 1980s the X-Men must defeat an ancient all-powerful mutant, En Sabah Nur, who intends to thrive through bringing destruction to the world.

A group of scientists try to track down and trap a killer alien seductress before she successfully mates with a human.

A fire-fighting cadet, two college professors, and a geeky but sexy government scientist work against an alien organism that has been rapidly evolving since its arrival on Earth inside a meteor.