Brigitte Bardot during the filming of Two weeks in September, 1966

Cecile is a young and beautiful Frenchwoman married to a much older Englishman. She loves her husband and seems to be content with her life, until she meets a younger man and feels forgotten passions stirring within her. She now finds herself confronted with a choice: to stay with the steady and peaceful love of her husband, or to run off for excitement and adventure with a new love?