In 1937, Yaowang Valley was bombed by the Japanese army. Before his death, the old pharmacist gave the "Book of Alchemy" to his apprentice Chen Shoucheng. This kid fled to Shanghai with a book in his pocket. He originally wanted to open a drug store to make a living, but he met Zhao Yulan, a female military agent. One can make alchemy, and the other can send reports. The two of them work together to confront the Japanese. Zhou Guoliang led people to chase, Watanabe Ichiro set up a trap, and Chen Shoucheng relied on his pills and formations to fool the Japanese around. But if the Book of Heaven shortens his life by one year at a time, can he survive until the victory of the Anti-Japanese War?
