As adapted from Jean Bruce's endless series of novels, the French series of O.S.S. adventure comedies showcase the globetrotting exploits of Hubert Bonisseur de la Bath (AKA O.S.S.), a Derek Flint-like superspy. This outing finds O.S.S. shuttled off to Rio de Janeiro where his assignment involves retrieving microfilm that lists French Nazi collaborators during World War II. He then teams up with the seductive lieutenant Dolores (Louise Monot) to track down a gang of escaped Nazis. ~ Nathan Southern, All Movie Guide