This series is divided into 6 episodes. A chemicals plant in a small town in the south of France explodes, causing several deaths and serious injuries. Unfortunately on the fatal day, a group of children happen to visit the factory. An inquiry is started to identify who is responsible. Every episode shows a look back at the disaster, through the eyes of six different people. It's interesting and of course only in the last episode we learn who is the culprit. I must say that the conclusion is not very satisfying and it seems it ends too fast.
My favorite is episode 5, where Clément, one of the students who visits the factory on that day, thinks that it is him who has caused the explosion.