During a romantic picnic with her boyfriend Simon, Lilou Braque is called to the scene of a murder. In a vineyard a man has been killed with a shotgun. While Lilou tries to establish the identity of the deceased, her friend Claire discovers the deed of ownership for a château dated 1933 in the secret drawer of an antique desk. Strangely, no property with this name exists, and also there are no records of its supposed owner. When Lilou discovers who the victim in the vineyard is, she fears there is an awful connection. Together with the true heir of the château, she puts herself in danger in order to catch the murderer.
