In 2200, private detective Aline Ruby and her android partner Carlos Rivera are hired by a wealthy businessman to track down a notorious hacker. On Mars, they descend deep into the underbelly of the planet's capital city where they uncover a darker story of brain farms, corruption, and a missing girl who holds a secret about the robots that threatens to change the face of the universe.

Facing a series of complex murder cases, new police commander Hélène Bach must learn to work with the brilliant yet exasperating Raphaël, who can make the dead speak like no-one else.

Fired for insubordination, PJ Antoine Verlay, good cop but a blood strand and having difficulty working as a team, is attached to the OCBC (Central Office for the fight against Traffic in Cultural Goods) thanks to the intervention of the commander Pardo, his friend who becomes, therefore, his new superior. A clever investigator, but a stranger to everything related to culture, Antoine will have to work with Florence Chassagne, renowned art historian, who lives, speaks and breathes culture, to the point that - fruit of her great imagination - it happens to her in the midst of daydreams, to see and talk to the great artists who have disappeared as if they were familiar to her.

1892, Saint Petersburg. Sasha, a young Russian aristocrat, has always been fascinated by her grandfather's life as an adventurer. A renowned explorer, he designed a magnificent arctic ship, but he hasn't returned from his last expedition to the North Pole. To save her family's honor, Sasha runs away. Headed towards the Great North, she follows her grandfather's trail in search of his famous ship.

In order to wipe out the Gaulish village by any means necessary, Caesar plans to absorb the villagers into Roman culture by having an estate built next to the village to start a new Roman colony.