On the eve of the elections, the disappearance of the favorite candidate arouses concern. The political party Demain Québec asks for help from Cerbère while imposing an investigation carried out in secret, which divides the squad.

Fray makes disturbing revelations about his relationship with Aurélie. Noura is looking for the very handsome man who accompanied Aurélie the evening of her disappearance. In the company of Johanne, Dominic discovers the harsh reality of homelessness.