Victor, Sofia, and Ada are three adolescents evolving in very different worlds: between a medical student unaware of the risks he poses to his faculty friend, a high school student torn by social determinism, and a schoolgirl from a deserted rural area and victim of child crime on the internet, the series paints the portraits of three young adults confronted with the problem of cyberharassment.
Paul Barral, mayor of a small mountain town at the foot of Mont-Blanc, is fighting to maintain business and protect the school from an announced closure. Not without determination, the Mayor may have found the solution.
Since 2014, France's restorative justice programmes have offered a safe space for supervised dialogue between offenders and victims. Grégoire, Nawelle, and Sabine, victims of heists and violent robberies, agree to join one of these discussion groups alongside offenders Nassim, Issa, and Thomas, all convicted of violent robberies. Meanwhile Chloé, a victim of childhood sexual abuse, prepares for dialogue with her own agressor after learning he has moved back into town.
During a performance at the Château de Blois, an industrialist is murdered as he plays the role of Henri III. Arthur, the young actor playing the Duke of Guise, becomes prime suspect. Police Captain Alice Deschamps heads the investigation with her ex and Arthur's father, Detective Inspector Denis Frécant.
Follows Sophie and Nicolas who move from the capital to start a new life, but when his son comes back from playing with their new neighbors' son, they find he has some strange marks on his back and become suspicious of their neighbors.
35-year-old Audrey, the only survivor of a mysterious serial killer who raged in the Biarritz region 16 years earlier, is brutally taken back to her past by a new crime: a 17-year-old girl is found murdered on the Basque coast. Nothing links this murder to the series of crimes committed in the early 2000s by the "Itsas Killer," but Audrey is certain that Itsas is back.
