After copper miners discover a piece of the frozen tail of a giant prehistoric reptile in Lapland, scientists inadvertently bring it back to life.

A portion of the tail of a giant prehistoric reptile is discovered in Denmark. It regenerates into the entire reptile, which proceeds to both 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.—Paul White <[email protected]>

Copper miners in the tundra of Lapland discover a frozen piece of reptilian tail belonging to some unknown prehistoric creature. Taking the specimen to an aquarium in Copenhagen, Professor Martens (Asbjorn Andersen) gets more than he bargained for when the tail regenerates into a giant acid-spitting monster that terrorizes the country. The Danish military, led by U.N.-appointed U.S. General Mark Grayson (Carl Ottosen) attempts to hunt down the monster and destroy it, only to realize that blowing it up will create hundreds of monsters.—Jeremy Lunt <[email protected]>