Louis, a nine-year-old boy from Paris, spends his summer vacation in a small town in Brittany. His mother Claire has lodged him with her girlfriend Marcelle and her husband Pelo while she's having her second baby. There Louis makes friends with Martine, the ten-year- old girl next door, and learns from her about life.
When the mother of a "tribe" of five children leaves for good, their inept father is not sure how to keep the family clothed and fed, and without the help of his neighbor Simone, he would be nowhere. She is attracted to him but eventually gives up on the relationship. Meanwhile, the father grabs his brood and they take off for Paris in search of the wife. But Simone accidentally ends up on the same train...
The film is set in France in August 1944 at the end of the war. German troops are in retreat as the allies are coming in. Two French boys run from home and on their journey they stumble upon a German soldier. Soon they become friends and together they head towards Lyon...
