In the year 1453, young Luca Vero is recruited by a mysterious stranger to record the end of time in Europe. Seventeen-year-old Isolde, Lady Abbess, is trapped in a convent by her sister to prevent her from claiming her inheritance. The nuns who take care of her have strange visions, sleepwalk, and suffer from marks on their hands. Luca is sent to investigate. Forced to face the biggest fears of the Dark Ages, Luca and Isolde set out to uncover the truth and their destinies. Along the way, they find love as they follow in the path of the real historical figure who defends the boundaries of Christendom and holds the secrets of the Order of Darkness.