Deckard O'Shea has come to terms with his family's birthright, even if it is one he would've never chosen. His world as he knows it is in shambles as King Arthur's true nemesis, Jakobus, has orchestrated mayhem and panic. Along with the newly formed Keepers Division of the military, Deckard dons the legendary sword Excalibur in a war torn England and struggles to survive against ruthless axis powers and special forces known as Harvesters led by the devil himself. In the Keepers' attempts to find and neutralize Jakobus, Deckard learns that even enemies can be more than meets the eye and the unthinkable will strike regardless of how hard you try. As Deckard races against the clock to complete his quest, he learns that even the most well prepared knight should question everything he sees as he follows in his Grandad Davey's footsteps.