In search of a missing treasure, Da Silva returns to an old caseOff the island of Barbados, the crew of a Brazilian ocean liner hear the sounds of Carnival coming from shore. A small boat pulls alongside, and a band of steel drummers offer to play for them. As they make their rounds on the ship, the bandleader slips away. He forces one of the crew to open the ship's safe, and escapes before the song has ended, taking half a million dollars in gems with him.The Brazilian police send detective Da Silva to investigate. He captures the thieves but never recovers the jewels. Fifteen years later, Da Silva tracks down the last living gang member and follows him back to Barbados, hoping the thief will lead him to the long-forgotten treasure — and a final solution to the case.