Kyushu is divided into three parts, and the three tribes of demons, demons and elves have been at odds with each other for thousands of years.
The demon king is old and his throne is undecided. The two most dazzling heirs of the demon clan, the eldest princess Ke and the priest Yu, embark on the road to fight for the king at the same time. Seizing power in the court, diplomacy between the three ethnic groups, border wars, and behind-the-scenes conspiracies followed one after another. From fighting side by side to tit for tat, they turned the whole world into a chess game.
At the same time, men with different identities also broke into the chess game one after another: the enemy prince, the elf undercover, the demon envoy, the loyal guard...
Some of them are willing to be the sharp blade in their hands, some are their weakness, and some are willing to trade their lives for them to ascend the throne.
Purpose: Taking the growth and game of two female rulers as the main line, explore the meaning of power, war, trust and unity.