Aurelien is twenty years old and cannot forget anything. Ask him what happened on any given date in his life and he can recall the weather, his clothes, the conversations, down to details most people lose within days. The film follows him as doctors and researchers test the limits of his recall, a condition known as highly superior autobiographical memory, comparing his case to the handful of others documented worldwide. Interviews with Aurelien and his family explore what it actually feels like to live without the mercy of forgetting, from the advantage it gives him in exams to the burden of reliving embarrassments and griefs with the same intensity as the day they happened. Scientists probe his brain and his history for clues to why some memories fossilize perfectly while everyone else's fade, and the film treats his condition as a real puzzle for neuroscience rather than a party trick, asking what his case reveals about memory in general.