Miou Miou is an enigmatic actress who has for a long time refused to look back on her successes and her career, which she considers it is past. But for "Belles de Coeur", she gives herself up as she never did before by offering us a moment of her life, a parenthesis she chose. She talks more particularly about her friendship with Albert Solal, a clown who brings smiles back to sick children and the elderly. He travels all over France with other volunteers to brighten up the daily life of hospitals and retirement homes. The public is thus offered sincere, personal and moving portraits. It is women fighters and volunteers that spectators discover in "Belles de Coeur".