Kevin, a debt collector, decides to leave the criminal organization of his mentor, "Santa", when he learns that his girlfriend Julie is pregnant. He is then sucked into a dangerous spiral with deadly consequences. As Kevin juggles the birth of his baby and his desire to free himself from his illicit activities, thanks to flashbacks, he relives the upsetting events of his youth; from his mother, Suzanne, who sends him to live at his uncle Stéphane's golf course, to the reunion with his father, Richard, an unstable criminal he barely knows.
The Arsenaults, a close-knit family who profit from illegal hunting, have ruled the roost for several generations in Témiscouata, Quebec. The return to the fold of Anthony, the impetuous youngest of the family, then the arrival of Émilie, a radio host who exercises an ascendancy over Anthony and his older brother Adam, will come to test the harmony of the clan.
There is not only fresh air in Black Lake, there are also very mysterious things happening there... Valérie, a police officer from town, arrives with her son Dave to assist Adrien, the chief of police of a small village whose partner has been missing for 3 weeks.