Co-director, Clément Chevalier, had a scooter accident the day before the first day of filming.
The camp scenes with the group were entirely filmed in a backyard during the day.
Screenplay was finished on May 30, 2020.
The screenwriter who was supposed to be the co-director with Clément Chevalier left the project while filming (without any reason). He was replaced by Emilie Devienne.
While the director Clement Chevalier said there will be no sequel to this movie. In October 2021 it was announced a sequel and a third movie were in development and were supposed to be filmed back to back.