Filmmaker Stéphan Balay never knew Albert Balay, his paternal grandfather. Nor did his father. He never had the full story of Albert's disappearance, only fragments of stories and anecdotes that eventually settled on him: gendarme in the Resistance, tortured, deported, died in deportation. Certainties and unknowns intertwined. Stéphan made this film to put together the fragments of the story, reconstruct the puzzle, and get as close as possible to the truth.