In the continent of Jiuzhou, during a banquet attended by the young detective Yun Zhan and his master, they unexpectedly become involved in a bizarre case. They are mistakenly identified as criminal suspects by Princess Shi Qiutong and the captain of the guards, An Xuewu. In order to prove their innocence, Yun Zhan joins forces with several others to uncover the truth. Ultimately, in the rapidly changing circumstances of the case, they expose a massive conspiracy lurking behind the scenes...