Wei Chi, a retired special forces soldier, unexpectedly steps into a concession where Western fantasy intersects with the espionage of the Republic of China. He meets Meng Qiao, a female protagonist who has mastered the secret recipe of an ancient medicine. The two hide in troubled times to use medicine to save the people. They secretly deal with enemy agents from all sides, use their special abilities to crush the enemy's conspiracy, and safeguard the hope of people's livelihood and the bottom line of the country in the bloody sea of espionage.
