Alex is the most powerful supernatural mafia king in America. For centuries, he has lived without loving anyone. Until he meets YOU. You are an ordinary human girl, but there is something unusual about you: you possess an ancient celestial soul that can either destroy his demonic powers or make him completely invincible. He initially approaches you for his own mysterious reasons. But eventually, he falls deeply in love with you. Now he must choose between his immortal kingdom and the girl who has become his entire world.