Gilbert, his brother Boule and some friends live in Estaque. Between carelessness, petty theft and social gloom, they feel like the outcasts of a society where Gilbert has no future. This is the "last summer" that he intends to spend there, dragging his idleness, nevertheless beginning a romance with Josiane, a nice worker.

Nicknamed "the Aristo", a friendly tramp, once a very rich and influential man, will one fine day rediscover the splendor of his past...