Between imagination and reality, Jack will be confronted with his inner madness and discover the monster hiding in him... to the detriment of those around him.

Maude invites her boyfriend Jérémy to her mother's villa. A dream vacation! And then, the feeling that an intruder is watching. Maude suspects her ex... Indeed, Félix is ​​jealous. Félix is ​​unstable. Félix is ​​completely crazy.