After embarking on numerous investigations and saving a kitten that now bears her name, Mao Mao enjoys a moment of calm. Indeed, a caravan of merchants is passing through town to offer the finest items to the concubines and ladies-in-waiting: clothing, jewelry, various powders, tea, spices...
However, nothing escapes the young girl's sharp eye, and several elements quickly catch her attention! Even when everything seems to be going well in the inner court, danger lurks...