A blood-soaked, medieval epic that tells the story of Wilkin Brattle, a 14th century warrior, whose life is forever changed when a divine messenger beseeches him to lay down his sword and lead the life of another man: a journeyman executioner. Set in northern Wales during a time rife with rebellion and political upheaval, Wilkin must walk a tight rope between protecting his true identity while also serving a mysterious destiny. Guided by Annora, a mystical healer whose seeming omniscience keeps Wilkin under her sway; manipulated by Milus Corbett, a devious Chamberlain with grand political aspirations; and driven by a deepening connection with the Baroness Lady Love, Wilkin struggles to navigate political, emotional and supernal pitfalls in his quest to understand his greater purpose.

14th-century knights transport a suspected witch to a monastery, where monks deduce that her powers could be the source of the Black Plague.