Stefan Borba was a member of a spy ring during the war but after the end of the conflict he opted out. Now he is a miner in Belgium and lives happily there with his wife Denise. Unfortunately for him, his past catches up with him. One day indeed, Milan, a secret agent with whom he used to work, resurfaces and forces him back into action...

In a Munich circus, Pierre, who has come to attend the funeral of his father, a famous illusionist, finds love in the arms of the beautiful Hildegarde. But he discovers that Hildegarde has a twin sister, Greta.

A secret agent is dispatched to find a rare and valuable drug.