Jen asks Renaud to come back with her to investigate in Val-Paradis. Seeing her so determined to shed light on the disappearance of her sister, Renaud accepts to make sure that clues would not have escaped him three years earlier.
Renaud, having been the victim of bullying, wonders about the intentions behind this gesture. Residents of Val-Paradis do not necessarily welcome the investigator's return to their peaceful little village.
Renaud makes a discovery in room 35 that could harm him. This discovery makes everyone on edge in Val-Paradis, including Brigitte and Renaud who fear that a secret will come out into the open.
Jen seeks answers and understands some aspects of her condition from her E.M.I. Everything happens very quickly, serious suspicions weigh on Simon, Carl and William concerning the affair of the camera.
Reinforcements land in Val-Paradis, including Geneviève, investigator and spouse of Renaud. It is she who takes the investigation of the network in hand and wishes to dismantle the network which rages well beyond Val-Paradis.
Several shared clues lead Renaud to a presumed culprit. This is where the heart of the story will be unveiled. The culprits offer no resistance, their fate no longer belongs to them.