A runaway kid using an app that turns desperation into supernatural power discovers the man who built the system was always watching. Sukuna's climb through JUNGLE isn't a power fantasy, it's a grooming narrative disguised as one. The Green King doesn't recruit soldiers; he collects broken people who think they're finally free.

Sukuna Gojo is a boy who fled his wealthy family, fed up with parents who tried to control him. Now on his own, he gets by on the streets with the help of JUNGLE, a social networking app that gives its users unnatural powers and abilities. After a brush with the app's founder, Nagare Hisui, the Green King, Sukuna wants to know more about him. So he sets out to rise through JUNGLE's ranks and meet Hisui face to face. Reaching the top rank means beating the most powerful user on the app. The film is a supernatural action side story in the K franchise.