Karim Ben Ali est le lanceur d'alerte de Florange. Fin 2016, ce chauffeur intérimaire filme un déversement d'acide souillé mettant en cause Arcelor Mittal. Cette alerte citoyenne va bouleverser sa vie. Entre fierté et regrets, Karim confie son parcours d’homme, désormais seul, sans travail, victime de l'industrie.

Karim Ben Ali is the Florange whistleblower. In late 2016, this temp worker filmed an acid spread and called out the conglomerate Arcelor-Mittal. His life would never be the same. Torn between pride and regrets, Karim opens up to the camera: the story of a forsaken man, jobless, and sheds light on how we are inability to protect whistleblowers.