The Campbell Structure and the Save the cat structure are the most used structures in hollywood. Audiences are also bored as heck :)

The Campbell structure is the Sa-dominant and is the linear ascent.

You shouldnt seperate a story from a structure at all. You should find the right bones for the story. Not suggesting otherwise in anyway.

PS: if by any chance, you come across the script for that film, do share. Would love to see what it says. Im curious myself now. If i had to guess, reading the synopsis of the film, i'd say : https://arc.quanten.co/archetype/anishchit