Morgane is accused of murdering her former boss Émilie Fontaine and ends up in prison despite her persistent protestations of innocence. To help his former colleague, Inspector Karadec starts investigating. Together they reopen the case - until an unexpected twist changes everything.

Morgane and Timothée spend a night together - but instead of clarity, this only brings new confusion. But there isn't much time to think, because the team is called to a crime scene: Yvan Desfard has been discovered dead on the side of the road. The investigation is complicated by the fact that the victim was part of a secluded hermit community. While Morgane tries to solve the complex case, she struggles with the question of what to do next with Timothée.