A former kingpin of the streets, Miles “Cain” Skinner is doing life in prison. He is feared and respected among the inmates. When Cain learns that his sentence will be shortened only by brain cancer, his urgency to change his ways goes into overdrive.

When American soldiers inadvertently steal Attila the Hun's secret riches, the wrath of the barbarian is awakened; the mummified warrior will stop at nothing to kill the intruders.