"Nos jours heureux" is a French film that tells the story of a group of teenagers spending their summer at a camp. The camp is run by a group of counselors who are also young adults, and together they navigate the challenges and joys of adolescence. The film explores themes of friendship, love, and self-discovery as the characters bond over shared experiences and form lasting memories. As the summer comes to an end, the teenagers must confront the reality of returning to their normal lives, but the time spent at camp has changed them forever.