Cliff Richard and The Shadows are hired to star in a movie shot amid the lush tropical scenery of the Canary Islands. A sunny seaside spectacular, filled with romance, excitement and high spirits - not to mention a dozen musical numbers.

Nicky and his friends find that their youth club is in danger of being flattened to make way for a new office block unless they can come up with £1500 to pay the new owner, the ruthless property tycoon Hamilton Black. To help raise the cash, Nicky records a song and his friends broadcast it via a pirate radio station, touting him as "The Mystery Singer" - the plan works and interest in their up and coming show is heightened by this new but unknown heart-throb. But Nicky has an even bigger secret and one that he cannot share, even with his girlfriend Toni... Hamilton Black is his father.

A drab little English seaside town tries to improve its image - and increase its revenues - by holding a film festival. When a famous continental star agrees to attend, things get out of hand.