Jean Monier is a disillusioned lawyer, appointed to defend Nicolas Milik, a man accused of murdering his wife. While everything points to his guilt, Monier takes up the case, convinced of his innocence.
Franck, a scrap merchant, and Meriem have five children, a sixth on the go, and serious money issues. Julien and Anna are lawyers and cannot have a child. This is the story of an inconceivable agreement.