For generations, the kingdoms of Rattan and Viriya have been at war. Ryujin, the crown prince of Rattan, was raised to believe that Viriya was the enemy. A ruthless commander on the battlefield, he has spent years fighting the kingdom responsible for countless deaths, including those closest to him. Patji, heir to Viriya, was raised with the same hatred. To him, Ryujin is not simply an opposing prince. He is the face of everything his kingdom has lost. When Ryujin is captured after a devastating battle, Patji becomes responsible for his imprisonment. They have every reason to despise one another, and neither is willing to forget the blood between their families. But when an assassination attempt reveals that someone within both kingdoms has been secretly manipulating the war, the two princes are forced into an alliance neither of them wants. To uncover the truth, they must cross enemy territory together, trust the person they were raised to hate, and confront the families who taught them that loyalty mattered more than anything else. Because the closer they get to the truth, the more dangerous their growing connection becomes. And when the war finally forces them to choose between their crowns and each other, they must decide what they're willing to lose for a peace neither kingdom ever believed was possible.