Halo Bay has had nothing but bad luck with men her whole life, from a cheating high school boyfriend to the abusive one she just stabbed through the eye. Fatally wounded from her last fight with him, she falls unconscious, only to wake in purgatory with two choices before her. Sew her own eyes and mouth shut and wander around purgatory for an eternity, or, follow an extremely hot man, by the name of Gunner, to Hell. There she will train to be a "Hellhound", a hunter of all things nasty that escape Hell and go topside. Only with this can they try to redeem themselves and possibly gain their freedom.
Settling into her new life as a Hellbound is almost easier than the amazing love affair just starting to grow between her and Gunner. His inability to open up, and her problems with trust, tend to make things difficult. Not to mention, she has another who admires her, the Prince of Fire himself, Lucifer. Halo becomes frustrated and makes a fatal mistake that could cost her everything.