In a world where humans were merely an ant to a greater species, a girl lived with her mother in fear of being taken. Vampires and other unnatural beings took over the world and humans were what was preyed upon. If you were rich enough you would be able to buy over their respect, but if you weren't, you'd just have to fend for yourselves and work for the respect only noble humans earn.
Grace was human, a peasant. Grace wasn't rich enough. Grace wanted to be free. Everyone wanted to be free. Grace is just like everyone.
Michael was a vampire, the king. Michael was rich enough. Michael was as free as free gets. But, to Michael, Grace wasn't like everyone at all.