# Three act structure in screenwriting, explained

**Quick answer:** Screenwriters commonly use setup, confrontation, and resolution to map a character’s struggle. The act breaks mark changes in that struggle, not fixed page deadlines.

Source: https://scriptsolo.com/blog/three-act-structure-screenplay/ · Scriptsolo · Updated 2026-10-23

A three act structure is a story shape commonly divided into setup, confrontation, and resolution. For the broader map, see the [guide to screenplay structure](https://scriptsolo.com/guides/screenplay-structure/).

## What does this story structure mean?

**Act**: An act is a major division of a story. In this model, turning points commonly join the acts.

Imagine Mara, a repair-shop worker trying to prevent her mother’s shop from being sold. The setup establishes the threatened sale. The confrontation follows Mara’s attempts to prevent it. The resolution shows what her struggle changes.

## What happens in each act?

The acts commonly establish the problem, develop the struggle, and settle its outcome. In Mara’s story, that means a threatened sale, a fight over ownership, and a decision about the shop’s future.

**Common act divisions and approximate shares of a feature screenplay**

| Act | Common job | Common share of the script |
| --- | --- | --- |
| Act one: setup | Introduce the main character, their world, and what is wrong or missing. | About the first quarter |
| Act two: confrontation | Follow the main character pursuing a goal against growing opposition. | About the middle half |
| Act three: resolution | Settle the central conflict and show the consequences. | About the final quarter |

**The setup commonly establishes what is wrong before the main struggle begins.** Mara repairs radios while her mother quietly packs the shop. The sale notice disrupts Mara’s routine. For more on that disruption, read [what an inciting incident does](https://scriptsolo.com/blog/what-is-an-inciting-incident/).

**The confrontation commonly follows a goal against growing opposition.** Mara searches for proof that her brother arranged the sale without permission. Each discovery costs her more trust within the family. See [ways to develop act two](https://scriptsolo.com/blog/how-to-write-act-two/) for advice on sustaining that struggle.

**The final act commonly settles the central struggle and shows its consequences.** Mara brings the forged paperwork to her mother, who refuses the sale. Afterward, her mother hands Mara the shop keys, but leaves her brother’s workbench empty.

## What are plot points?

**Plot point**: A plot point is an event that turns the story in a new direction. In Syd Field’s model, plot points commonly close the first and second acts and launch the next.

Mara’s refusal to surrender the keys could end the setup. She moves from fearing the sale to actively resisting it. The next act can follow the consequences of that choice.

**Example:** Mara refuses the handover

```
INT. REPAIR SHOP - NIGHT

Mara's brother holds out his palm. The shop keys hang from
Mara's finger.

                      BROTHER
          The buyer's waiting outside.

Mara pockets the keys and lowers the shutter.

                      MARA
          Then he can wait.
```

## Where did this model come from?

Syd Field’s 1979 book *Screenplay: The Foundations of Screenwriting* popularized the model commonly used for screenplays. It describes two plot points that turn one act into the next.

## Do all stories have three acts?

Treat this structure as a common description, not a requirement. With Mara’s story, ask whether her refusal changes the struggle, rather than whether it lands at an exact fraction.

[Start writing](https://scriptsolo.com/signup/)

## Frequently asked questions

### What is the three-act structure in simple terms?

The model commonly divides a story into setup, confrontation, and resolution. Establish the problem, follow the struggle, then show the outcome.

### Where does each act end?

In a feature, act one commonly occupies the first quarter, and act two the middle half. In Field’s model, plot points mark those changes in direction.

### Does a short film need three acts?

Use setup, confrontation, and resolution if they help you understand your short film. Treat them as a way to examine its shape, not compartments you must fill.