The narrative structure of the popular movies can be broken down into

Three acts

Explanation:

ACT 1 is the Set up (25%): This act is what grabs the audience and within the first 10 minutes or so of the movie, they will decide whether they like the film or not.

ACT 2 is confrontation (Midpoint 50%): Act 1 ends and we jump to act 2. The main character in this section has to face problems that escalate and become more and advanced. This is where they confront their enemies quite helplessly up until a certain point where things start to turn around.

ACT 3 is the Resolution (25%): The hero takes control and achieves a final, decisive victory.