Claire and Philippe Rochette, an eccentric couple from Brittany, share an obsession with crime novels and TV thrillers. Their passion takes a surprising turn when they convince their daughter, Charline-a brilliant but no-nonsense Parisian police captain-to transfer back home to Rennes. Determined to "help" her solve crimes, Claire and Philippe throw themselves into her investigations, much to Charline's exasperation. Each case challenges the family dynamic: from suspicious deaths in wealthy households to bodies uncovered in unexpected places, no mystery escapes their curiosity. While Charline strives to maintain professionalism, her parents' unconventional methods often create as many complications as breakthroughs. Alongside the investigations, Charline navigates personal upheavals-rekindling ties with her childhood sweetheart Bastien, uncovering secrets about her past, and preparing for motherhood. Balancing family chaos with high-stakes police work, this quirky, heartfelt detective drama blends suspense, humor, and the enduring bonds of family.