How to Write a Screenplay
A step-by-step guide for screenwriters
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Introduction
Built from the best-selling books by Blake Snyder (1957–2009), the Save the Cat! approach is grounded in 10 genres/story types, 15 story beats (the Blake Snyder Beat Sheet), and a visual planning system called The Board—a practical framework for screenplay structure and story development from beginning to end.
Through our books, workshops, story structure software, and coaching, you’ll master the fundamentals of screenwriting—plot, pacing, character transformation, and emotional momentum for film and television.
Save the Cat! has helped aspiring and professional screenwriters develop feature screenplays, television pilots, shorts, and episodic stories across every major genre.
Blake Snyder coined “Save the Cat!” to remind us of something simple: before we follow a hero anywhere, we have to connect to them. Sometimes that means literally saving a cat. More often, it’s a small moment that makes us—the reader and the audience—care.
Welcome to Save the Cat!
The Transformation Machine
Writer and audience begin together. When the story starts, we step onto the train—and we don’t come back the same.
Change isn’t easy. It isn’t painless.
That’s why it matters.
Call it “formula” if you want. But without real change, there’s no real story.
So how do you track transformation in your screenplay?
Save the Cat! maps it clearly through:
- The 15 beats of the Blake Snyder Beat Sheet
- The 40-card structure of The Board
- The Transformation Machine
The Transformation Machine shows how a hero sheds an old way of being and emerges transformed. That shift isn’t abstract—it can be shaped, measured, and applied to any screenplay you’re writing.
The Logline
It’s the foundation of screenplay development—a constant test of whether your concept is clear, focused, and compelling.
A strong logline includes four elements:
- A protagonist
- An antagonist or central obstacle
- A clear goal
- An open-ended question (what’s at stake?)
The 10 Genres
Genre and structure are the twin engines of successful screenwriting.
The Save the Cat! framework organizes story into 10 genres/story types—defined not by setting, but by the kind of transformation at the core of the narrative.
When you’re stuck… when your screenplay feels unclear… identifying its story type brings focus and direction.
Each genre has 3 essential components.
Buddy Love
The 3 elements of a Buddy Love story are:
- An incomplete hero who is missing something physical, ethical, or spiritual; (s)he needs another to be whole.
- A counterpart who makes that completion come about or has qualities the hero needs.
- A complication, be it a misunderstanding, personal or ethical viewpoint, epic historical event, or the prudish disapproval of society.
Dude with a Problem
The 3 elements of a Dude with a Problem story are:
- An innocent hero who is dragged into a mess without asking for it—or even aware of how he got involved.
- A sudden event that thrusts our innocent(s) into the world of hurt—and it comes without warning.
- A life or death battle is at stake—and the continued existence of an individual, family, group, or society is in question.
Fool Triumphant
The 3 elements of a Fool Triumphant story are:
- A fool whose innocence is his strength and whose gentle manner makes him likely to be ignored—by all but a jealous “Insider” who knows too well.
- An establishment, the people or group a fool comes up against, either within his midst, or after being sent to a new place in which he does not fit… at first.
- A transmutation in which the fool becomes someone or something new, often including a “name change” that’s taken on either by accident or as a disguise.
Golden Fleece
The 3 elements of a Golden Fleece story are:
- A road spanning oceans, time, or across the street—so long as it demarcates growth. It often includes a “Road Apple” that stops the trip cold.
- A team or a buddy the hero needs to be guided along the way. Usually, it’s those who represent the things the hero doesn’t have: skill, experience, or attitude.
- A prize that’s sought and is something primal: going home, securing a treasure, or re-gaining a birthright.
Institutionalized
The 3 elements of a Institutionalized story are:
- A group—a family, an organization, or a business that is unique and that the hero lives or works with, or must deal with.
- A choice, the ongoing conflict pitting a “Brando” or “Naif” vs. the system’s “Company Man.”
- Finally, a sacrifice must be made leading to one of three endings: join, burn it down… or commit “suicide.”
Monster in the House
The 3 elements of a Monster in the House story are:
- A monster that is supernatural in its powers—even if its strength derives from insanity—and “evil” at its core.
- A house, meaning an enclosed space that can include a family unit, an entire town, or even “the world.”
- A sin. Someone is guilty of bringing the monster in the house… a transgression that can include ignorance.
Out of the Bottle
The 3 elements of a Out of the Bottle story are:
- A wish asked for by the hero or another, and the clearly seen need to be delivered from the ordinary.
- A spell, which we must make logical by upholding “The Rules.”
- A lesson: Be careful what you wish for! It’s the running theme in all OOTB’s. Life is good as it is.
Rites of Passage
The 3 elements of a Rites of Passage story are:
- A life problem: from puberty to midlife to death, there are universal passages we all understand.
- A wrong way to attack the mysterious problem, usually a diversion from confronting the pain.
- A solution that involves acceptance of a hard truth the hero has been fighting, and the knowledge it’s the hero that must change, not the world around him.
Superhero
The 3 elements of a Superhero story are:
- The hero of your tale must have a special power—even if it’s just a mission to be great or do good.
- The hero must be opposed by a nemesis of equal or greater force, who is the “self-made” version of the hero.
- There must be a curse for the hero that he either surmounts or succumbs to as the price for who he is.
Whydunit
The 3 elements of a Whydunit story are:
- The detective does not change, we do; yet he can be any kind of gumshoe—from pro to amateur to imaginary.
- The secret of the case is so strong it overwhelms the worldly lures of money, sex, power, or fame. We gots to know! And so does the Whydunit hero.
- Finally, the dark turn shows that in pursuit of the secret, the detective will break the rules, even his own—often ones he has relied on for years to keep him safe. The pull of the secret is too great.
A writer’s job is to master the basics of each story type, and learn to give them your own twist to make them ring true for your generation.
The Blake Snyder Beat Sheet
Genres tell us how stories differ. The Beat Sheet shows us how they’re built.
Blake codified a universal 15-beat screenplay structure that appears in successful films and television scripts again and again. Each beat corresponds to a percentage of your script, guiding the emotional rise and fall of your story.
The Save the Cat! Beat Sheet gives screenwriters a clear roadmap from Opening Image to Final Image—ensuring structure, pacing, and character transformation stay aligned.
ACT 1: The Ordinary World — Thesis
Beat 1. Opening Image
0–1 %
A thematic or grabbing visual image, scene, or short sequence which sets the tone of your movie. It often serves as the “before” picture of your hero (or world) that will transform throughout the story.
Beat 2. Theme Stated
5 %
A line of dialogue that organically states what your story is all about. The theme is typically voiced by another character to your hero, calling out the hero’s deeper flaw or spiritual need for change.
Beat 3. Set-Up
1–10 %
Reveals your main character’s “ordinary life” or status quo. Takes time to demonstrate a character’s flaws that negatively impact the hero’s life. Describes the character’s familiar world when it comes to home, work, and play, and introduces the main characters who inhabit the hero’s life.
Beat 4. Catalyst
10 %
The life-changing moment that happens to the hero and sets the story in motion. Provides that initial shove onto the story roller coaster.
Beat 5. Debate
10–20 %
The reaction to the Catalyst, usually presented in the form of a question. (“Do I really have to go on this dangerous quest?”) Can be a sequence of doubt, denial, evasion, or even preparation. It lends weight to the life-changing bigger journey yet to come and foreshadows the new world as one that you do not enter lightly.
ACT 2: The Upside-Down World — Antithesis
Beat 6. Break into Two
20 %
The hero decides to take action and locks in to accomplish a goal, venturing into a new world, or choosing a new way of thinking. This is a no-turning-back decision that separates the old, ordinary world from the new world.
Beat 7. B Story
22 %
A thematic secondary story is kicked off. Often, this is a story about love or friendship or mentorship.
Beat 8. Fun & Games
20–50 %
The hero is in the new world. This beat delivers on the promise of the premise. It’s a large section of the story that essentially presents “the movie you came to see.” Contains scenes and sequences that are shown in the trailer of movies or on that “Coming Next Week” teaser at the end of a TV show.
Beat 9. Midpoint
50 %
The middle of the story and culmination of the Fun & Games. Usually, this beat is a false victory or a false defeat. The Midpoint raises the stakes on the hero, forcing them to narrow their focus on winning the day or surviving. Often, a ticking clock is introduced here, ratcheting up tension and boosting the urgency.
Beat 10. Bad Guys Close in
50–75 %
Stakes have raised and tension is higher. External Bad Guys may be literally closing in or psychological, internal Bad Guys may be causing more problems.
Beat 11. All Is Lost
75 %
The moment the hero most feared actually happens. Now it looks like the hero will lose. Usually contains a whiff of death where someone has died or the threat of real death is in the air. This is the hero’s rock-bottom moment.
Beat 12. Dark Night of the Soul
75–80 %
A reaction to the All Is Lost where the hero wallows in sadness, mourning what was lost and lamenting that they are now worse off than before the story began. This is an opportunity to take stock, where meaningful learning happens on the way to transformation.
ACT 3: Merged World — Synthesis
Beat 13. Break into Three
80 %
A new piece of information is discovered and the hero realizes what they must do to solve all the problems that have been created in Act 2.
Beat 14. Finale
80–99 %
The big showdown where the hero finally proves they’ve learned the lesson that was taught via their struggles in Act 2. The quest is won, the dragon is slain, and when the smoke clears, the hero has changed. Their flaw is repaired and the world is indeed a better place.
Beat 15. Final Image
99–100 %
The “after photo” of the hero and the world. This mirror of the Opening Image shows how far the world and the hero have transformed.
The craftsmanship, the patient work, the magic of storytelling, all come together in how the writer executes and realizes structure. It’s a skill you must know.
The Board
The Board is the classic Hollywood development tool—3″ × 5″ cards on a wall—that allows you to see your story before you write it.
It’s where you test structure, shift scenes, sharpen turns, and solve problems early in the screenwriting process.
The Board contains 4 rows, 10 cards each:
- Row 1: Act One – ending with the Break into Two
- Row 2: Act Two (Part 1) – including B Story and Fun & Games
- Row 3: Act Two (Part 2) – Bad Guys Close In through Break into Three
- Row 4: Act Three – Finale and Final Image
Each card tracks 2 essential elements:
>< < Conflict
+/- +/- Emotional Change
Because every strong scene needs both.
Fill in all 40 cards honestly, and you’ll know exactly what must happen in every scene… before you type FADE IN.
SCREENWRITING F.A.Q.
1. What is the basic structure of a screenplay?
A screenplay is built around a three-act structure shaped by key turning points. In Save the Cat!, this is mapped across 15 beats—from the Opening Image to the Final Image—that track both plot progression and character transformation, so you can see how the story builds and where it lands.
2. What is Save the Cat! in screenwriting?
Save the Cat! is a storytelling framework created by screenwriter Blake Snyder. It breaks story into 15 beats that help writers structure their screenplay, track character transformation, and understand what makes a story work before writing a full draft.
3. What is a Beat Sheet in screenwriting?
A Beat Sheet maps the major turning points of your screenplay before you start writing. In Save the Cat!, it includes 15 beats—such as the Catalyst, Break into Two, Midpoint, and All Is Lost—that track how the story progresses and how the character changes, allowing you to test the story before drafting.
4. How long should a screenplay be?
Most feature screenplays run between 90 and 120 pages. Because one page roughly equals one minute of screen time, pacing matters—each act and major beat should move the story forward and build pressure on the hero.
5. Do I need to outline my screenplay before writing?
You don’t have to outline first, but it can help you avoid structural problems. Some writers map their beats before drafting, while others write freely and then use the beats to shape and refine the story afterward.
6. What makes a screenplay work?
A screenplay works when structure, character, and stakes are aligned—and when the story tracks clear change. In Save the Cat!, this is measured through the beats: the Midpoint shifts the story, All Is Lost creates a true low point, and the Finale resolves both the external conflict and the internal transformation. If those beats land, the story works.
7. How do I write a strong logline?
A strong logline defines the protagonist, the goal, the obstacle, and the stakes, while capturing the core irony of the story. In Save the Cat!, the logline is also a test—it should clearly suggest the central conflict and hint at the transformation, so you know your idea can sustain a full screenplay.
8. How do I format a screenplay correctly?
Screenplays follow industry-standard formatting for scene headings, dialogue, and action lines. Most writers use screenwriting software so they can focus on structure and story beats instead of formatting details.
9. How do I fix a slow middle in my screenplay?
A slow middle usually means the story isn’t escalating. In Save the Cat!, the middle is driven by key beats: the Midpoint delivers a false victory or false defeat and raises the stakes, Bad Guys Close In increases pressure on the hero, and a ticking clock creates urgency. If those elements aren’t working, the story stalls. When they work, the middle builds momentum and drives the story toward transformation.
10. Can beginners learn screenwriting structure?
Yes. Structure is a skill. Once you understand how the beats work and how a character changes across them, you can apply that framework to any idea and improve with practice.
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