Ever since Xiaoxing turned into a cat, her sense of smell has become extremely sensitive. Recently, a series of bizarre incidents have occurred. Xiaolan came up with a clever plan, hoping to use Xiaoxing's sense of smell to help investigate the case. The Universe Elite Academy held a ballet competition. Sai Hong was regarded as the favorite to win the championship, but her dancing shoes disappeared before the competition! Later, when Sai Hong visited an ancient town, he disappeared mysteriously without any clues... Over there, Usanur's cultural relics were lost due to previous wars. If you want to get the cultural relics back, you have to bid at an auction. At the auction, Ushanur's token was actively bid for, but at the most tense moment, the lights suddenly went out and the token disappeared! How will the clever Xiaolan find clues to the case? Can Hyosung solve the case and become the "Little Prince of Detectives"?
