In other words, Mark is a guy over a closed lock inviolable. Marc is a guy who has a history, these stories do not tell you willingly. This new job gives him the opportunity to open lots of doors and discover, through this, the small miseries of his fellows. To get up - because he must get back up when you survive a disaster - he chose to become a locksmith. One day a customer makes a funny application that will do reconnect with the past that he can not forget . At the helm of this thriller, illustrated, two masters: for the scenario and Benacquista Tardi for drawing.