Love at Twenty unites five directors from five different countries to present their different perspectives on what love really is at the age of 20. The episodes are united with the score of Georges Delerue and still photos of Henri Cartier-Bresson.

1955 film by Christian Stengel

In the First World War, when Paris is expected to fall to the Germans, the attractive widow, Princesse de Bormes, organises a convoy of cars to evacuate the wounded from the front, and bring them back to her villa in Paris to recuperate. The authorities will not give them passes until an innocent 16-year-old boy, Guillaume Thomas de Fontenoy, joins them and is mistaken as the nephew of the popular General de Fontenoy. The Princess is enraptured by Thomas and her daughter, Henriette, falls in love with him. However Thomas feels impelled to see more of the action of the war.

In 1930, Louis Martinet, a peaceful sexagenarian, no longer has a long life to live according to the words of his doctor, Leon Galipeau, who sees to take advantage of the very interesting situation of the "future deceased". This one indeed has a small house in Saint-Tropez. Galipeau sniffs the windfall. Following his advice, Martinet agrees to give it in life to the brother of the doctor, Emile, and then rushes back to a health of iron. Worse, he even survives the war. Galipeau, exhausted, decide to use the great means to get rid of the importunce who persists in thwarting their project...