Venice, 1580. The Marquis Della Porta lives alone in his villa with his secretary Jacopo, his servant Paolo and his beloved courtesan Veronica. Veronica is the only female and the three men are in love with her.
When miners blast for gold in the 1870's, they accidentally release ancient creatures known as Tommyknockers. The Town of Deer Creek, Nevada is soon under siege with only a handful of survivors held up in the local saloon.