A man with no name is forced into a world of danger and bloodshed after he saves a scientist and a gifted child from a horde of radiation-scarred mutants.

Horrific Nazi experiments have left a surviving WWII soldier with a terrifying condition: at the sight of fresh blood, he transforms into a man-sized, blood-sucking killer insect. Refusing to let his affliction destroy him and all he loves, he instead commits himself to using his "powers" for good-by finding the people responsible and bringing them to justice.

When radiation left behind by atomic weapons testing creates a gigantic killer mutant arachnid, it's up to a trio of scientists, an Army general, and a newspaper reporter and his fiancée to figure out how to stop the hungry beast from devouring the entire county.