Following the funeral of a local farmer, Bruno gets a phone call from his son. He tells Bruno that before his father's sudden death, he had signed over his property to an insurance company in return for a subscription to a luxury retirement home. Bruno discovers that both the retirement home and the insurance company are scams with links to a Russian oligarch whose dealings are already being tracked by the French police. Meanwhile an aging British rock star is selling his home, Chateau Rock. The star's son returns for the summer with his Russian girlfriend. As Bruno pursues his inquiries into the farmer's death and the stolen inheritance, he learns that the oligarch is none other than the girlfriend's father. Bruno's talents are tested to the limit as he untangles a Gordian Knot of criminality that reaches as far as the Kremlin.