It’s not uncommon for major film studios and production companies to contractually stipulate that a delivered screenplay must have a definite three-act structure and be no longer than 2 hours and 8 minutes, or 128 pages, in length.
screenplay is a story told with pictures, in dialogue and description, and placed within the context of dramatic structure.
when a contract is written in Hollywood between the filmmaker and production company, it states that when the movie is delivered, it will be no longer than 2 hours and 8 minutes. That’s approximately 128 pages of screenplay. Why? Because it’s an economic decision that has evolved over the years.
A Plot Point is defined as any incident, episode, or event that hooks into the action and spins it around in another direction —in this case, Plot Point I moves the action forward into Act II and Plot Point II moves the action into Act III. Plot Point I occurs at the end of Act I, anywhere from pages 20 to 25 or 30. A Plot Point is always a function of the main character.
Note: Plot points appear to be one of Field's contributions