Manue and Johanna are now working on a murder case. While looking into Nour's affair with an older man, the investigators discover the teenager's secret aspirations. Since she left Paris and settled in Bozouls, the young girl had been cultivating desires to escape. Manue and Johanna think that the suffering teenager fell into a trap that caused her downfall…

While the investigators think they have their culprit, an unexpected twist reshuffles all the cards. Angèle and Luca, Johanna and Manue's children, find themselves in the sights of David Levy who assists them in their investigations. Guided by their maternal instinct, Manue and Johanna refuse to believe in their child's guilt. Banished from the investigation, the two friends tear each other apart...