In 1971, a young woman moves from the French countryside to Paris and begins a passionate love affair with a feminist leader.
In her fifties, jobless and lonely, Rosa has lost her self-esteem. Her life takes a new turn when she decides to give a ball to her young neighbour, who keeps losing his. To thank her, his parents invite her over unexpectedly and proudly announce that their child has just appeared in a TV advert.
