After 4-year old Grégory is found murdered in the Vologne river in a small village in northeastern France, local police suspects the crime may be linked to the anonymous threats that Grégory's parents, Christine and Jean-Marie Villemin had been receiving for past 3 years.
An alleged witness comes forward whose testimony points to the hand of an extended family member of Jean-Marie Villemin in the murder of his son, Grégory, but police investigation threatens to come full circle after the witness retracts her statement.
Grégory's murder case captures attention of people across France and receives wide coverage by national media that begins to influence police investigation and judicial rectitude. Judge Jean-Michel Lambert appoints new investigators while the press toys with Grégory's mother, Christine, as a possible suspect.
Fed up with the investigation into his son's murder, Jean-Marie Villemin executes a shocking plan of revenge while French media's vilification of his wife, Christine, spins out of control.
After judge Lambert's conclusions are found wrongful by a criminal court, reinvestigation is ordered under a new judge, Maurice Simon, but despite his painstaking efforts, it may just be too late to uncover the truth.