A bloody case at Shendu University leads to the wartime secret of the "Metamorphosis" project. Criminal investigator Shen Bing joins forces with Professor Chen Mo to hunt down the transnational organization "Ashes" across the three cities of Shendu, Jincheng, and Huadu. They uncover a genetically modified killing machine and tear away the illusion of a "perfect crime" spanning half a century. A legacy of darkness, a battle of life and death!
