Continued from Episode 1. Unit 42 is at the footsteps of the woman who kidnapped Léa, an adopted girl. The investigation is complicated when they learn that the abductor is armed, also holds Billie, and that Lea's life is in danger.

A young General Manager is found dead in the sauna of a company manufacturing smart objects. While the crime was committed from a distance, Unit 42 must unravel the mysteries of a company where frantic competition and the cult of secrecy are the norm. Trade unionists, employees, financiers in the workplace, everyone seemed to blame the GM, an authoritarian woman who led everyone to the stick, even her companion, who in order to free himself from her grip has had to commit the irreparable.