Police captain Laure Bertraud returns to work as she and her team begin a complex new investigation after a human torso is discovered in a pile of garbage in the 20th arrondissement in Paris. Meanwhile, a high profile criminal trial tempts ambitious lawyer Joséphine Karlsson, and Judge Roban faces a health crisis. This new season pushes every character to their limit, and forces them all to question long-standing affiliations and beliefs.
After a failed robbery, a gang of 3 noble thieves: Zuza, Kinga and Alicja hides in a quiet nursing home. While the police are on their heels, the gang continues their activities at the center, giving its elderly residents a second youth.