In a world where demons have all of the power and humans are second-class citizens, only a young girl has the courage to stand up to the city's ruling class. Riley Brennan steals magic from rich demons and gives to poor humans. With the help of her mechanized ape-like guardian, John, and the demon priest Arnie, Riley will square off against Regent Steig and his demon army, with the fate of the human race in the balance.