A fallen angel...An immortal human...A race against time...

When two souls born on opposite sides of the battle between Heaven and Hell team up to find a sacred antidote to a supernatural disease, the balance between good and evil are forever altered.

Isabel, a Paradisian Scholar, is an immortal human trained in the ways of Heaven and Hell. During her last battle, a dark force erased specific portions of her past life memories. She remembers little, save for the fact she's a demon slayer mentored by the archangel Gabriel. When ordered to a new post to help translate a volume of ancient text from a forbidden verse, Isabel's path crosses with a dark prince, Nicolai, who is in a race against time to stop a deadly virus, which he unknowingly unleashed, from threatening his kin. Nicolai needs Isabel's help, and she finds the tempting creature hard to resist. Secrets are revealed as the efforts to keep the virus from attacking again unfold.