Shanghai, 1941: the final, darkest days of the isolated city.
While carrying out a mission, Nationalist secret agent Gu Shen is captured by the Japanese. Under torture, his superior and father-figure mentor, Fang Shijie, is exposed and killed. Driven by rage and guilt, Gu Shen makes a fatal mistake and nearly compromises the entire intelligence network. He is transferred back to Chongqing for investigation, and his career hits rock bottom.
Betrayal and conviction, love and duty, loyalty and faith: with three identities intertwined and every act of trust potentially part of a carefully planned deception, Gu Shen must find where he truly belongs in a maze woven from lies.
