Mélice, 7, comes to Paris for a weekend with her mother. She discovers the capital through the eyes of a child, but what she doesn't know is that her view of the world will have an impact on the people she meets.

In 1940, in France, Jean Chevalin lives with his family in great poverty after deserting the army. Convinced that some people manage better than others, he decides to pretend to be Jewish in order to receive help from smugglers and reach the free zone. This ruse will lead his family on a journey that will gradually dismantle his prejudices.