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 to agree to their marriage. Despite the Empress Dowager's opposition, Yuk leads a secluded life with Siu afar; a noble breed thus living a hard life. The King lets her go, only granting an annual visit. A year later, Yuk and her husband returns for a visit. The Queen still wants to break them up. Later, Jin State sends people to discover the whereabouts of their Princes. Siu is in fact the Prince of Jin. With Muk’s blessings, Siu marries Yuk in Jin, a marriage which brings peace to both states.
Unfortunately the movie Happy Wedding is not yet available on HBO Max.
| Directing | Lung To | Director |
| Writing | Tong Tik-Sang | Writer |
| Production | Law Shun-wah | Executive Producer |
| Production | Wong To | Producer |
| Production | Lee Kit-Fong | Producer |
| Sound | Tong Tik-Sang | Songs |
| Directing | Yeung Tsi-kong | Assistant Director |
| Crew | Wong Kat-sing | Cinematography |
| Editing | Poon Chiu | Editor |
| Sound | Tong Tik-Sang | Music |
| Sound | Law Ching-Ting | Musician |
| Sound | Ho Hoi-Ki | Musician |
| Production | Wong Lung | Production Assistant |
| Directing | Fung King | Continuity |
| Sound | Tam Wang-Yuen | Recording Supervision |
| Art | Sam Tai Co | Props |
