Frank Willes, a young professional footballer, is involved in a road accident from which he emerges partially crippled, having crashed into the car of a wealthy shopkeeper who dies in the accident. Willes then learns that the merchant's widow, Clémence Grandval, stands to gain a fortune from her husband's life insurance. He also discovers that his accident may not have been an accident at all.

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.

Thérèse is living in a provincial town, unhappily married to Bernard, a dull, pompous man whose only interest is preserving his family name and property. They live in an isolated country mansion surrounded by servants. Early in her marriage her only comforts are her fondness for Bernard's pine-tree forest, which was her primary reason for marrying him, and her love for her sister-in-law and Bernard's half-sister, Anne. The movie recounts in flashback the circumstances that led to her being charged with poisoning her husband.

A Japanese racing driver for Nissan named Godai (Yujiro Ishihara) have a rivalry with a French driver named Pierre (Jean-Claude Drouot). Godai is enlisted to race in an annual endurance race, The East African Safari Rally. Peripheral to this is the story concerning Godai's former lover Yuko (Ruriko Asaoka), a fashion designer, and her friend Anna (Emmanuel Riva), who happens to be Pierre's wife.