The relationship between Jacques Laroche and his son Marc is still very tense. The two police officers are forced to collaborate again when they have to infiltrate a couple bootcamp to get closer to the right arm of the mafia leader, who participates in group therapy with his spouse. Jacques will be the psychologist's assistant and Marc will take part in the therapy with his lover, Alice. As their couple flounders, they hope to kill two birds by saving their relationship while completing their mission. But things will be more complicated than expected .