Dion, the FBI's most wanted human assassin, is on the run from a fatal manhunt when he stumbles into the resting place of Lucas, a long-slumbering Vampire Prince. Lucas instantly recognizes Dion as the boy who, twenty years ago, promised to one day become his bride — and drags him back to his ancient castle. Dion fights tooth and nail to escape, but under Lucas's relentless, possessive pursuit, he can no longer deny the desire burning deep inside him. After surviving betrayal, misunderstanding, and the wrath of forces hunting them both, the two finally surrender to each other — a fated love that defies time, species, and every rule between them.