The captured special soldier Lu Chenyan was displayed as a trophy by the enemy commander Jiang Zhao, but he was as silent as a razor in the iron cage. When Jiang Zhao knelt down and surrendered to his superior officer, Lu Chenyan smiled - the loyalty of this empire was nothing more than a kneeling slave. In the prisoner-of-war camp, the mute doctor Zhou Ye delivers medicine to him, the crazy veteran Old Harrier hides a biochemical conspiracy, and the propaganda officer Liu Qinghe secretly spreads his resistance. The real traitor was Shen Jin, the smiling man beside Jiang Zhao who handed him the coffee. A war, two men, three betrayals, four hidden lines. Who is the real leader? Who is the real prisoner of war?
