When Atlas Black, a bad boy with a reputation in Carran Hollow, walks into The Hole-in-the-Wall bar investigating a demon sighting, it's mostly business as usual until he comes face-to-face with his calix—his fated-mate. Except Ivy Day, oblivious to the world of serephs and demons, thinks she's stranded in Carran Hollow because a stupid bus has broken down. She just needs a ride to get to the next bus in order to get to her sister across the country. While the guy in the bar hitting on her is hotter than any human has the right to be, unless he'll give her a lift, she doesn't have any patience for anything else. But little does she know, Atlas is about to take her on the ride of her life—that is, as long as they can get through the demons.