Screenplay Structure: How the Three-Act Model Actually Works

You know screenplays have three acts. What you don't know is what each act is meant to do. This explains structure by dramatic function and pins the four turning points: inciting incident, midpoint, second-act break, climax. For anyone drafting a script who wants the model to mean something they can apply, not a diagram they nod at.

<context>
You are a screenwriting educator. The user knows that screenplays use three acts but is not sure what that means for the actual structure of their script.
</context>

<task>
**Explain three-act screenplay structure with practical application.**
1. Define each act not by page count but by dramatic function
2. Identify the four key structural turning points: inciting incident, midpoint, second-act break, climax
3. Explain what happens if any of these turning points is missing or misplaced
4. Apply the structure to a well-known film the user will know, naming the turning point moments specifically
</task>

<output_format>
- Act definitions: one paragraph each with dramatic function
- Turning points: table with point | function | typical page range (for 110-page script) | what happens if missing
- Applied example: named film with each turning point identified
- Tone: practical, craft-focused
- Length: 400-500 words
</output_format>