The first-person narration is that of Luo Jing, a special soldier who has experienced life and death missions. He accidentally traveled through time and was reborn during the Anti-Japanese War of the Republic of China. He met Meng Zhao, a detective who is good at peeling off cocoons. While the two relied on their extraordinary minds to do business and accumulate resources to raise anti-Japanese supplies, they secretly tracked the traces of hidden enemy spies. They worked step by step in the treacherous concession area to protect the compatriots around them and complete their mission for the country.
