A fallen angel, tired of being unappreciated while doing his pointless, demeaning job, leaves Hell, enters the body of a seventeen-year-old boy, and tries to experience the full range of human feelings before being caught and punished, while the boy's family and friends puzzle over his changed behavior.

Sophomore Colt Trammel loves baseball and his girlfriend Grace, but he hates the rest of high school and maintains a tough facade to hide his feelings of inferiority.

Battling his own memories and fears, Cole, an extraordinarily conscientious vampire, and Sandor, a more impulsive acquaintance, spend a few months on the road, trying to train a young man who recently joined their ranks.