Cinder Ellis works at her stepmother's company, cleaning up after assassins.
When she is sent on a routine job, she discovers that the body has the ownership mark of a Vampire, making him the legal property of the Vampires. Not wanting to be liable to the blood suckers, she gets out of there, setting off a chain of events.
Cinder promises herself that she will get away from her controlling Stepmother, but to do that, she must get into the Prince Corp Ball to speak a rival clean up company's owner about a job.
Dante Prince, head of Prince Corp, has his own clean-up crew, but when they're busy, he calls in an outsider to do a one-off job. What he doesn't expect is that his mate is the Cleaner to turn up, but before he can tell her she's his mate, she is gone.
The next time he sees her is at his company's annual ball, but again before he can claim her, the clock hits midnight and she runs, leaving only a single high heel behind.
With a Vampire wanting her blood, a stepfamily set on her never escaping their clutches and a Werebeast tracking her, Cinder is having a hell of a time.