Lucie is surprised to find Sébastien outside her door, especially since she has the unpleasant impression that he is hiding something from her. Normand, on the other hand, sets out his objectives: he wants to restore order in the penitentiary, which has the reputation of being too permissive. The rooms of the unit are searched, and Marie finds herself in isolation.

Normand and Martin are doing interviews in order to fill the position of psychologist of the prison, vacant but indispensable. Georges continues to accompany Laurence in the ordeal she is going through. Meanwhile, Michèle finds the courage to write to her children with Mary's help.