The stories of the people of Villeneuve, a fictional subprefecture, in the Jura, in German–occupied France during the Second World War.

Police captain Déa Versini works with Jimmy. They are inseparable and have formed a perfect partnership on the streets. There is no case they can’t crack! But their relationship is shaken up by the arrival of a new lieutenant, Matthieu Belcourt. Is it possible for them to work as a trio? Unlikely… given that Jimmy is Déa’s imaginary friend!