Anne Desbarèdes is a young woman who is married to a wealthy businessman and lives a monotonous existence in the small commune town of Blaye. After indirectly witnessing a murder in a café, she returns to the scene of the crime the next day and meets Chauvin, who informs her in more detail about the events that took place. Mentally unbalanced, Anne begins to believe that Chauvin intends to kill her.
Therese, a café owner, mourns the mysterious disappearance of her husband sixteen years earlier. A tramp arrives in the town and she believes him to be her husband. But he is suffering from amnesia and she tries to bring back his memory of earlier times.
The married couple Pierre and Eva live in a conventional middle-class environment, but Pierre increasingly feels alienated from people and things.
