In the fierce battle in the north, Huo Yefeng tore up the appointment letter with his broken arm, refused to retreat to the rear, and vowed to die with the front line. Next to him, Yu Ran was once a sharpshooter in the army, but now he was saddled with being a rebel. The two were originally companions in life and death, but they became enemies due to a conspiracy. When the enemy's cavalry breaks through the border, only they know that the real betrayal is hidden in the secret orders of the high command. They will not lose their will even if their arms are broken, and they will not bow their heads when they are wronged. They use their broken bodies as blades and blood as ink to rewrite their loyalty in the smoke of war.