A tough customs man, out to get a youth smuggling tobacco into France across the Belgium border, falls for the jaded ex bar hostess the smuggler lives with.Meanwhile the young man is intrigued by another, more innocent girl.

A group of travelers, including a monk, stay in a lonely inn in the mountains. The host confesses the monk his habit of serving poisoned soup to the guests, to rob their possessions and to bury them in the backyard.

"Olivia" captures the awakening passions of an English adolescent sent away for a year to a small finishing school outside Paris. The innocent but watchful Olivia develops an infatuation for her headmistress, Mlle. Julie, and through this screen of love observes the tense romance between Mlle. Julie and the other head of the school, Mlle. Cara, in its final months.