Alma and her brother spend the holidays with their grandmother on the family estate exploring its most secret corners. One day, Alma hears a voice coming from the cavern at the far end of the park.

In France in 1942. Blanche and Virgile live in the free zone and use a boat to help a local network of resistance fighters and refugees. One day the couple propose to take in Sarah, a Jewish child who is impatiently awaiting her parents

Claude and Marie Verneuil will soon be celebrating their 40th wedding anniversary. For the occasion, their four daughters - Isabelle, Odile, Ségolène and Laure - decide to organize a big surprise party in their family home in Chinon. They also decide to invite, each, the parents of their respective husbands - Rachid Benassem, David Benichou, Chao Ling and Charles Koffi.