Raphael is the Archangel of Justice, a champion of humans and warrior who has kept demons from the human realm. Having a half-demon hiding in his home is strictly verboten. And the fact that he can't keep his hands off her? Well, sometimes the war between good and evil is best fought between the sheets...

Astaroth Sinclair's demon side is taking over, staining her entire body red and raising her body temperature hot enough to incinerate her clothes. Even more complicated is the fact that she is helplessly and hopelessly in love with Raphael—even if they have nothing in common other than explosive chemistry.

But when Asta starts digging for answers, she sets off a chain of event that no one could have foreseen. Now her love for Raphael will either save the world...or destroy it.