Leading man Michel Piccoli plays Pierre, a young musician who briefly catches sight of a beautiful woman dressed in blue and soon spends all of his time trying to track her down. After roaming the streets of Paris in search of the mystery woman, he recruits an old friend to help find her.

A Romanian peasant fights to get back to his family after he's imprisoned by the Nazis.The picture is based on real events. It includes Hungary's government in collaboration with the Nazis, the encroachment of Romania by Stalin's troopers, and other happenings.

During a stay at a roadside inn, long-distance lorry driver Jean Viard meets a young woman Clothilde who works there. Their friendship soon develops into a passionate love affair, even though Jean is already married and is old enough to be Clothilde’s father. Things take a turn for the worse when Jean loses his job and his wife finds out about his affair. But Clothilde’s predicament is even more distressing...

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.

In Nice, a wealthy widow is charmed by a young man who marries her and manages her finances. He soon starts an affair with her secretary, who proves to be even more ruthless than he is.