Set in the summer of 1942 during WWII, the film traces the trajectory of simple people thrown into extraordinary lives, revealing the heart-warming flame of hope and humanity that endures, even in times of war and dispair. As young Julien, his family and a group of friends traverse the French countryside after fleeing the institution they called home, Julien must deal with his father's extreme violence and his mother's rosy fantasies and once again form a family that society tries to forget.

C'est l'été en 1940, un été inoubliable pour Alida, Fernand, Julie, Lucie, Colette et quelques autres qui vont vivre la plus belle des embellies : la liberté.