Marseilles. Roxanne Delage is a professor of archeology. She is married to Alexis, they have an 8 year old daughter, Alma. One afternoon, she goes to a private individual to assess a Mayan mask. She wakes up several hours later, half-naked next to a man's corpse. She panics and runs away.

The police come to arrest her shortly after at her home, in front of her family, accused of having killed her lover. Charged, imprisoned, tried and sentenced to 12 years in prison, she decides to cut ties with those she loves to spare them the painful hours of visiting rooms.

8 years later, Roxane leaves prison and she is determined to prove her innocence. She will meet Hugo, the cop who had arrested him while he was ill, and gradually convince him that the real culprit is still in nature ...