One is a prince with great military exploits, and the other is a craftsman from a neighboring country. The world only knows that he is a close relative of the emperor, but he has been stationed at the border all year round. He has wandered on the edge of life and death several times, but he doesn't know that every time he dreams back at midnight, he always sees the man's smile as clear as the first time he met him. From then on, he has been obsessed with him all his life, vowing to find that man and let him taste the endless pain he inflicted on himself. The world also said that a mysterious figure single-handedly reversed the outcome of the battlefield, allowing the small country to survive for three years under the pressure of the God of War. However, no one knew that there was a figure living in panic, just to avoid the man's increasing number of pursuers and the suffocating guilt... And love.