Justine is 21 years old and has lived with her grandparents and cousin Jules since the death of her parents. She works as a carer at a retirement home and spends her days listening to her residents' stories. After bonding with Helene, an almost 100-year-old resident, the two women slowly reveal their stories to one another. Whilst Justine helps Helene to relive her memories of love and war, Helene encourages Justine to confront the secrets of her own past, and the loss she has buried deep within. One day, trouble arrives in the form of a mysterious phone call that shakes the retirement home to its core and uncovers a shocking revelation.

Original title: Les Oubliés du dimanche.