A father, a mother, a stepmother, a stepfather, half-brothers and sisters, when the family grows, the situation often represents a complex adventure, a source of stress or great joy. In France, more than a quarter of marriages give rise to recompositions. There are 800,000 in-laws today and one child in ten lives in a blended family! A real social phenomenon. And each configuration seems unique. We will follow several families who are going through the great experience of blended families.