Tang Wan-tung, the son of a Southeast Asian Sultan is a student in Hong Kong. Only Uncle Mui, his guardian, knows his identity. Tang is known as "student prince". He organises an embassy variety show. Tang invites Lai Tsi-king, who has a lovely voice, to perform in it, but it ruins her chance to study music abroad. Lai’s parents want her to marry Tung Fook-si, the son of a merchant. Lai asks Tang to act for her parents, like a prince courting her. Her parents are convinced, but Tung is not fooled. Tang smuggles Lai out to perform in the embassy. Lai's performance earns her a chance to study overseas, but her parents will not support her. Tang borrows money from his father, but is refused. He pawns his father’s ring to help Lai pay the tuition. Tung takes his father's ring and sells it. Tung's father alerts the police. The rings turn out to be a pair. The police think Tang stole the diamond ring, but Mui tells the truth. Tung is arrested and Tang and Lai have a happy ending.
as Tang Wan-tung
as Miss Ng
as Lai Tsi-king
as Tung Fook-si
as Kong Ying-Hung
as Principal Lui
as King's Mother
as Yau Hok-Man
as Chi-King's Father
as Boss Ma
as Fook-Si's Father
as Fook-Si's Mother
as Headmaster Fong
as Tang's Guardian, Uncle Mui
as Fook-Si's Friend
as Yu Chi-Kan, Student/waiter
as Lam Kai-Ting
as Lee Chau-Chin, Male Classmate
as Police Officer
as Professor
as Detective
as Musician
as Pawnbroker
as Announcer at Concert
as Piano Player
as Mr. Ou
as Jewelry Store Owner
