The kidnapping and murder of a young woman on France’s Mediterranean coast reawakens horrors of the past. Three years ago, criminologist Ariane’s cousin was killed and her mother, homicide inspector Sandra, was suspected to be involved in the case. When Sandra’s former boss invites her to help out on the new case, mother and daughter, who had a visceral falling-out over Elodie’s murder, have to join forces.
George, host of a television show focusing on literature, receives videos shot on the sly that feature his family, along with disturbing drawings that are difficult to interpret. He has no idea who has made and sent him the videos. Progressively, the contents of the videos become more personal, indicating that the sender has known George for a long time.
A series of events unfold like a chain reaction, all stemming from a minor event that brings the film's five characters together. Set in Paris, France, Anne is an actress whose boyfriend Georges photographs the war in Kosovo. Georges' brother, Jean, is looking for the entry code to Georges' apartment. These characters' lives interconnect with a Romanian immigrant and a deaf teacher.