Young and ambitious Captain Vivés has just been appointed group leader at the Grenoble Criminal Squad when Clara's murder case lands on his desk. Vivés and his team investigate Clara's complex life and relations, but what starts as a professional and methodical immersion into the victim's life soon turns into a haunting obsession.

Set in 18th century, a 10 year old deaf boy has been abandoned by his mother, Comtesse de Solar, and is taken care by Abbé de l'Épée, who teaches him how to comunicate and express.