1653: The long and bloody English Civil War is at an end. King Charles is dead and Oliver Cromwell rules the land as king in all but name. Richard Treadwell, an exiled royalist officer and soldier-for-hire to the King of France and his all-powerful advisor, the wily Cardinal Mazarin, burns with revenge for those who deprived him of his family and fortune. He decides upon a self-appointed mission to return to England in secret and assassinate the new Lord Protector. Once back on English soil however, he learns that his is not the only plot in motion. A secret army run by a deluded Puritan is bent on the same quest, guided by the Devil’s hand. Treadwell soon finds himself in a desperate turnaround: he must save Cromwell to save England from a literal descent into Hell. But first he has to contend with a wife he left in Devon who believes she’s a widow and a furious Paris mistress who has trailed him to England, jeopardizing everything. Treadwell needs allies fast. Can he convince the man sent to forcibly drag him back to Cardinal Mazarin? A young king’s musketeer named d’Artagnan.