Private Gold 38: Network (1999)

On one of the most beautiful beaches in the Caribbean, a couple discovers the exhausted body of Bernard, an amateur navigator who had rented a catamaran to sail between the islands with his wife. But, on the high seas, they are attacked by pirates who throw Bernard to the sharks and take his wife. Surviving, he does not rest until he finds out whether his wife is still alive. To do this he must investigate a shady affair on which the police do not seem interested in spending time and effort. Bernard is therefore compelled to go up against unpleasant and rather wealthy people who live off sex slavery.