In Bon Cop, Bad Cop, David and Martin team up for an investigation that takes them across Canada after the band chief of an Indigenous community in Gaspésie mysteriously disappears. They are joined by a new cadre of cops who are just as unorthodox as they are: Gabrielle, David's daughter, who has her father's stubborn streak; Joe, an intrepid Micmac police officer from Gesgapegiag; and Kim, a Sureté du Québec lieutenant who is generally skeptical of David's methods.