In 1882, a group of British soldiers plunder an Egyptian temple and kill the high priest. The priest vows revenge, and is finally revived in the present day. He finds the great-grandson of the man who killed him, but they form an uneasy partnership to get back all the stolen artifacts and send all the descendants of the other soldiers to the Underworld. Two police officers, former partners who had a falling out, must put aside their differences as they go from trying to solve gruesome, unexplained murders to risking their lives to stop the supernatural mummy the priest has called forth.