When an American oil company sets up an experimental drilling plant out in the vast deserts of Mongolia, they awaken a nest. The deadly creatures begin to breed and spread, devouring everyone in their path. The only person who can stop them is treasure hunter and adventure seeker who spent his life searching for a legendary tomb, fabled to be protected by the Death Worms. He knows he must do what he can to kill the creatures, but stopping these monsters may mean destroying his life's work forever!

Digging at a nearby cave, a careless industrialist unearths a vein of pure base Lithium and inadvertently brings it to the surface, where the Lithium combusts when coming into contact with water and begins to wreak havoc on the country side.