Filmed at the real Tham Luang Nang Non cave in Chiang Rai province, Northern Thailand. Some of the real cave divers and rescue volunteers from the actual rescue mission were involved in the making of the film.
Some of the rescuers from the 2018 Thai Cave Rescue mission play themselves in this film.
The first feature movie about "Tham Luang Cave Rescue" which features many of the real-life cave divers as themselves.