The German and Pamela are mysteriously killed in rapid succession and Mystère is saved from an aggression only by the prompt intervention of Inspector Colt.

The German was in fact a photographer who had taken very compromising shots of an attack by the Soviet secret services on an American office in Piazza di Spagna where a politician was assassinated.

Colt then kills his boss and decides to deal directly with the secret services to be able to obtain a large sum for the film and escape to make a new life with Mystère.

Mystère finds Colt in his golden exile in Hong Kong and instead of taking revenge, the couple fall in love.

[4] Roberto Curti stated the film had "good commercial results" leading to the Vanzina brothers to develop Nothing Underneath.