The family's life changes radically after the arrival of the grandmother. A supporter of physical exercise, getting up early and going to church, she terrorizes her surroundings. After an unsuccessful attempt to get rid of a troublesome guest, the family decides to find the grandmother a fiancé.

The film traces two families, one of which is Jewish, who preserved the images for decades but hadn’t brought them to light. 80 years after their creation, the son of the photographer finds the forgotten negatives and launches an investigation. With a team of researchers, archivists, and animators who use near-forensic precision to reconstruct locations and contexts, they trace the circumstances of those tragic days and the lives captured in each frame.