Aina's childhood passed on the streets of Kosin. A city full of mystical rites, forbidden magic, sacrifices and the illegal diamond trade. Aina grew up in a world of poverty and violence, but the King on Blood took her under his protection. He raised a girl and made a hired killer. Now eighteen, Aina is a street thug who wants more from life than her background can provide. For her, the only chance to achieve something is smuggling diamonds behind the boss. To break with the past and gain the long-awaited freedom, Aina must fulfill the contract killing of the Diamond King. To do this, you will have to risk everything, but there is no choice: the life of Aina herself is at stake.