The iron-blooded military doctor Shen Zhao lurked behind enemy lines for ten years. Using his medical skills as a blade and silence as a shield, he weaved an intelligence network covering the core of the Japanese army in the sea of blood and corpses. When he turned against his violent contact Bai Yan due to the collapse of trust, when the genius Japanese military medical officer Sato Kenichi began to doubt his true identity, when the puppet government female agent Liu Yuechan chose a stance between blood and desire - a secret war covering biological weapons, underground medicine and the redemption of human nature has just opened the bloodiest page.
