Cheng Suining, nicknamed "Mad General", is like a madman on the battlefield, and the enemy is frightened by the news, but no one knows that he was the enemy's "shadow envoy" lurking seven years ago. Wen Zhaoyu, the enemy's new chief of staff, is as calm as a razor and vows to personally destroy the man who betrayed him. When the war resumed, Cheng Suining led his troops to raid the border fortress, but Wen Zhaoyu recognized the scar imprinted in his memory among the ruins of the battlefield - back then, it was Cheng Suining who personally sent him into the enemy camp. Now, who is the real undercover? Under the iron blood, is it the lingering warmth of betrayal, or the redemption that has been buried for ten years?
