In a world where Heaven and Hell constantly battle for control over the fates of humans, love between a mortal and an immortal is forbidden—a law decreed by the gods themselves. But when Evangeline, a mortal princess, and Lucien, the devil himself, fall in love, their bond defies not only the rules of the cosmos but also the very fabric of destiny. Lucien, once an archangel who fell from grace, has ruled the underworld for millennia. Cursed to be the warden of damned souls, he thought his heart was long beyond salvation—until he met Evangeline. Her pure spirit and fierce will awaken something in him he believed lost forever. Their love, however, comes at a steep price.