Roberto, a Peruvian boy in his teens, has moved to Montreal to live with his father, Bob Montoya, and his new Canadian family. While Bob tries to succeed in his new life as a small time "business man", the ties with his son will be marked by a quiet violence that seems to have followed them from their country of origin.

Under a scorching sun, Charlie is bored out of her mind and dreams of going to the seaside. But she's forced to guard a seedy motel with her cousin Jess, who's slumped in her deckchair. The two teenagers don't get along and bicker at every opportunity. On the radio, the monotone voice of a collapsology researcher predicts the imminent end of the world.

Louis, Éric and Daniel are inseparable. They are young, reckless and live at 100 miles an hour. Quickly, children's games take the path of small, disorganized crime. Their friendship will be put to the test. A tender and offbeat look at the turbulent and intoxicating period of the transition to adulthood, with the city of Quebec and its 1970s and 1980s as a backdrop.

In this sequel to the popular adventures of Mademoiselle C, the strange Mademoiselle Charlotte began a new life as a postwoman in Saint-Gérard where she encounters a particularly dishonest businessman.