The play mainly tells the story of Ye Kele, a perennial unlucky man who runs a pure tea shop left by his father in Wanle City. Unexpectedly, he is suddenly involved in a bizarre incense murder case. In order to cooperate with the investigation, he becomes a city patrol guard and accidentally becomes a secret agent. Strange things keep happening and the clues become confusing [1]. He encounters a Japanese girl named Ruoye. Based on the clues of Japanese spices, he deduces that she is the reincarnation of Jixing Princess Qi. Ye Kele falls in love with Princess Qi at first sight. In order to eliminate suspicion, he searches for Princess Qi and uses his sensitive nose to search for clues. The clues are broken by the moat. Then, based on the wine and the clues at the scene, he traces them back to Jiu Ruoshui. He finds that the mastermind is Lan Qingyue. Lan Qingyue is silenced. Jiu Ruoshui wakes up and rebels against the mastermind behind the rebellion. Then, with the unexpected guidance of Xiaoqi and the help of Ruoye, he finds that the mastermind behind the scenes is an insider of the palace.