The disease continues to spread silently. For now, Anne-Marie has other worries. She sets out to prove to the Minister that her lab is effective. She’s still hesitant to confront Marc. Françoise organizes a celebration for Xavier. It’s a small gathering – with immense consequences.

The dead can’t talk. Anne-Marie needs to know if people close to the victims are suffering from the disease. The clock is ticking. The lab team does all it can to break the chain of transmission and discover the nature of the virus.

Unaware that the epidemic is developing a second hot-spot, Anne-Marie focuses her energy on finding medication that will help patients. Will she go as far as breaking the law? Françoise is now in contact with Marcellin, a friend of Xavier’s who’s suffering from the same “flu.”