Our family, small, large, numerous, traditional, blended, modern… We think we know it by heart. However, appearances are often deceptive ... Each episode of Petits secrets en famille tells the story of a hero confronted, in spite of himself, with an event in life, with the secrets of his family circle: conflicts, forbidden love, money, inheritance, divorce, fraud, jealousy ... Our hero must investigate. He will discover that we never really know those who are closest to us.