"In a centuries-old war between devils and angels, Lucifer's quest for supremacy leads him to capture Angelina, Queen of Angels. But their mixed blood awakens the dormant 'Xarathys,' a monster capable of destroying the world. To prevent catastrophe, Poseiden creates Charlotte, a hybrid of Lucifer and Angelina's powers. On the eve of her coronation, Charlotte collapses, and only the blood of Xarathys's son, Ryder Salvatore, can save her. Ryder, unaware of his true identity, is the ruthless Capo of the Italian Mafia. Charlotte must navigate the treacherous world of mafia politics to convince Ryder to willingly give his blood. But as she draws closer, she risks falling for the one person who can save or destroy her."