Emma (Minami Hamabe), Rei (Shirohito), and Norman (Rihito Itagaki), who lived happily with Isabella, who is like a mother in an orphanage, are at the age of being adopted by foster parents. They wanted to live in the outside world.
One day, Emma and Norman head to a gate that shouldn't be approached to give Connie a forgotten item as she leaves the facility, and witnesses Connie being shipped as food for the demons. This was a facility for raising edible children for demons.
The Promised Neverland (2020) - movie trailer