Life is rough in the coal mines of 1876 Pennsylvania.A secret group of Irish emigrant miners, known as the Molly Maguires, fights against the cruelty of the mining company with sabotage and murder.

• 本片改编自真实事件，“莫利马贵”是一个以武力反抗矿主的秘密矿工团体，它的主要目的是反抗矿主对矿工们的剥削、协迫甚至是谋杀。