In this suspenseful story, scholar Fan Luo Luo disguises herself as a man and comes to Yecheng Yamen to work as a police officer. Unexpectedly, she met Gu Qian Mo, a young minister from Dali Temple who concealed his identity and came to investigate the theft of weapons. The two started a full-fledged daily life as colleagues. As the truths emerged one by one, love also grew and spread in their hearts…