During a bus tour of Marseille, a hold-up takes place in front of the passengers. Odette, a journalist and herself a passenger, decides to report on the pegre scene by meeting the man responsible for the hold-up. After a great deal of peripety, she manages to make her report.
The title role in the French comedy-fantasy A Martian in Paris is filled by Darry Cowl. The higher-ups in Mars want to learn all about that strange commodity, peculiar to the planet Earth, known as "Love". Darry soon figures out what makes the world go 'round when he meets the gorgeous Nicole...