Detective Surprenant, a veteran of major crimes in Montreal who took refuge in the Magdalen Islands, investigates the murder of a teenage girl with the help of his colleague Geneviève Savoie and inexperienced police officers, even giving up his vacation to resolve this sad story. However, he must deal with the arrogant chief inspector Sébastien Gingras, dispatched from Quebec City and with whom he has disagreements.
Diane Messier lives on a farm in the Eastern Townships, near the American border, with her daughter Sarah and her two sisters, Carmen and Julie. Following a tragic accident, Diane feels constantly threatened and even believes her house is haunted. Worried by her daughter's actions, Angèle returns from Florida to bring comfort to Diane and try to reunite the family clan.
Marc-Alexandre Moisan finds himself unconscious in the emergency room of Granby Hospital. He leads a double family and married life unbeknownst to all. His two partners and even his new lover see each other for the first time. But how has this sales representative been able to divide his life between Montreal and Magog for 3 years?