A portion of the tail of a prehistoric reptile is discovered in Denmark. It regenerates into the entire reptile, which proceeds to destroy buildings and property and generally make a nuisance of itself. It can fly, swim, and walk, and has impenetrable scales, which makes it difficult to kill.
A man is fired from his office job and at the same time he has a suspicion that his wife is cheating on him. The movie follows the desperate and dramatic reactions that the man makes up in his mind.
