Everyone's in shock when esteemed doctor Pierre is found to have killed his wife. 15 years later, released on parole and determined to find the culprit, he is rejected by his sons and only finds support with his daughter, Nina.

Sébastien Lacassagne, 35, owner of a wine estate, was assassinated with a statuette in his house. The investigation conducted by Prosecutor Elisabeth Richard and Captain Caroline Martinez reveals many gray areas in the victim's life.