Marcel, a simple-minded factory worker, is tricked into buying a high-priced American convertable car by a widow determined not to let it fall into the hands of her late husband's secretary/secret lover. Once in pocession of the car, Marcel only encounters one bad luck episode after another with the excessive gasoline consumtion, his wife trying to sell it to make ammends meet, getting into traffic jams, accidently riding into a car wash with the top down, and more.
An Italian submarine captain tries to navigate his sub through enemy waters while being stalked by a British warship. They both make it to the neutral port of Tangiers where they agree a truce.
Rejecting the union of her daughter Brigitte with a modest worker, Madame Magnin invents an adultery for the lover, then introduces Brigitte to a good-looking man working on the famous RTF entertainment show 36 Chandelles. The show ultimately seals the reunion of the two estranged young lovers. The story features a parade of music-hall stars from the era: Charles Trenet, Charles Aznavour, Georges Guétary, Juliette Gréco, Roger Pierre and Jean-Marc Thibault, Fernand Raynaud, Georges Ulmer and many more.
