When a teenager's father is accused of murder, the boy and his high-school classmates set out to find the real killer.

A dangerous amnesiac escapes from an asylum, hides in the opera house, and is suspected of getting revenge on those who tried to murder him 13 years ago.

Kalu and Tuila are two South Pacific islanders who are getting married. Invited to their wedding are several tourists who have recently arrived aboard a yacht. During the wedding Kalu sings a "Forbidden Melody", which is a song that a young man sings only once in his life, on the day of his wedding. However, he is enticed by Peggy, a nightclub performer who arrived on the yacht, into an illicit affair, eventually leaving with the tourists when their yacht departs. One of the other tourists is a nightclub owner, who offers Kalu a job back in the states.