A violinist is found dead not far from the tomb of DaVinci, in a suspicious position. Captain of the Orléans research section, Alban Dutertre teams up with Officer Bérénice Amarillo. Alban and Bérénice will have to solve the puzzle.

A disturbing cloud has appeared from the west. It moves slowly towards the centre of the country, prompting the population to take to the roads. As it advances relentlessly, panic increases. It is a cloud of acid.

Mélanie, 16 years old, lives with her mother. She likes going to school, her friends, playing the cello, and she wants to change the world. But when she meets a boy on the Internet and falls in love with him, her world changes as she is gradually recruited by Daesh. Sonia is 17 years old, and she almost did something irrevocable to “guarantee” her family a place in paradise. These teenage girls might be called Anaïs, Manon or Leila, and one day they all might go some way down the recruitment process. But can they ever come back from it?

A doctor and his son fall in love for the same woman, who has lost her child.