Reckless guardian angel Zachary has an unusual assignment. He's meant to save the soul of Miranda, high-school theater wannabe turned glamorous royal vampire. Completely devoted to Miranda, Zachary takes his demotion to human form in stride, taking a job as the princess's personal assistant. Of course, this means he has to balance his soul-saving efforts with planning the Master's fast-approaching Deathday gala. When Miranda's guardian angel Zachary recklessly saves her from falling into an open grave and dying, the result is that she turns into a vampire and he is left to try to reinstate his reputation by finally doing the right thing.

Series statement from "official author" website.