The story is heavily inspired by the lives of two men, Stéphane Benhamou and Daoud Tatou, each running an association devoted to helping young autistic people which the system cannot handle.
The two directors spent two years immersed in the lives of the two associations, enabling them to find the inspiration for many scenes that eventually found their way into the movie, including Valentin's escape.
The film was screened out of competition at the 2019 Cannes Film Festival.