During the Ming Dynasty, he was originally a prince. In order to find his childhood sweetheart who had been missing for many years, he transformed into an orphan among the people. After experiencing all the ups and downs of folk life, he inexplicably became a secret agent of the Jin Yiwei. He also made many friends and people he liked, and finally found his childhood sweetheart. The sweet horse, but unexpectedly turned out to be a scheming bitch, and the second male protagonist who loved the female protagonist was in the way. The male protagonist hid his true identity from everyone, and experienced countless stumbling blocks with the female protagonist, overcame the difficulties together, and completed the emperor's test for them...