In the Shanghai Concession in 1941, Chinese-American military doctor Lin Mo accidentally awakened the remaining memories of the assassin Wu Liuqi in his body while dissecting a Japanese soldier's corpse. In order to save the wounded members of the New Fourth Army, he used a combination of traditional Chinese and Western medicine and assassin secrets to treat the leader, and discovered that military special agents used ancient tomb mechanisms to create biochemical weapons. As he came into contact with more high-level officials of the Anti-Japanese War, he gradually discovered the network of traitors within the organization, and mastered a "Liying Picture Chronicle" that recorded the ancient tomb institutions of thirteen provinces.