During the Warring States Period, Nung-yuk, the Princess of Qin, denounces the mundane world and dreams of marrying an immortal. This extends to her criteria for choosing a husband: excelling in flute playing. Once, she is captivated by the tune 'Three Melodies of Rainbow Dress' and mistakes the qin player Siu Sze for a fairy. Yuk then persuades Sze to sit the national exam for a better future. Sze's music attracts hundred of birds. Yuk returns to the palace pleading with her father Esquire Muk ...