Morgane discovers the body of a salesgirl who was a lottery winner and decided to walk away and resume a normal life; Commander Karadec is under investigation by Internal Affairs.

A body is found on the side of the road and everyone believes she is a narcotics cop; Internal Affairs opens an investigation of Morgane, who tries to solve the murder from afar.

While Morgane is taking a training course in an emergency call center, she receives a call from a woman who claims a murder is taking place before her very eyes; when Morgane questions her, the woman swears she never called.

The charred body of a 17-year-old boy is found in the family barn; Morgane and Karadec's investigation initially points to the theft of a cow at his parents' farm.

While an over-eager journalist sticks her nose into a case, Morgane struggles to get through her break-up; her living situation at Celine's is uncomfortable, and she decides to take her kids to sleep at the scene of the crime.

An undertaker is found dead in his funeral parlor; Morgane discovers that he was poisoned while working on the corpse of a woman, who officially died of cancer; when her coffin is exhumed, they find it empty.

An investigation explores Romain's final hours; Roxane, an Internal Affairs agent and Karadec's girlfriend, have found inconsistencies in the file on the death of Morgane's ex-boyfriend.