Two teenagers secretly meet up in the forest, only to witness a blood bath. They are seen, but escape trying to keep this as a secret, both in fear of the perpetrator and that their secret is revealed.
The investigation takes on a national dimension, forcing Ronan Berg, a.k.a. “Lancelot,” to give a televised interview. Fearing recognition by the two teenagers, he attempts to murder Lucas. Hélène discovers that Yann is the second witness and decides to flee with her family to protect him.