Four-year-old Malone Moulin is haunted by nightmares of being handed over to a complete stranger and begins claiming his mother is not his real mother. Convinced that Malone is telling the truth, school psychologist Vasile approaches police commander Marianne Augresse with the case. Not knowing why a child would lie and with perhaps her own maternal and protective instinct kicking in, Marianne takes Vasile's plead for help seriously.