Matthieu is a young and also gifted black box analyst on an objective to resolve the factor behind the harmful accident of a new airplane. Yet, when the situation is closed by authorities, Matthieu can not assist but notice there is something incorrect with the proof. As he pays attention to the tracks again, he starts identifying some seriously troubling details. Could the tape have been customized? Breaking his employer' orders, Matthieu starts his own rogue examination - an obsessional and dangerous pursuit for reality that will promptly threatan far more than his job ...