Mang Lai Kwan, wanting to seek knowledge despite her father's opposition, often dresses as a man to go to school. On her ventures, she meets the royal grandson Temür Khan who is travelling in disguise and also a straight-up young hero Wongpo Siu Wah and the three become adopted brothers.
Although Temür sees through Lai Kwan's disguise, he does not expose her. Lai Kwan also has feelings for Temür. Her father arranges
