STORY ARC MAP
A flat middle
is a shape.
Plot the beats against tension, mark the act breaks, and run the subplots underneath. Structural problems are obvious as a drawing and invisible in an outline.
Free plan coming late 2026
Works in your browser
No account needed to view
Used by creative professionals at:
Artlist
Pixar
Nike
Red Bull
The North Face
Porsche
Start from a ready-made template
Pick a board to see what you can build, then let AI fill it in. Every template is a real, editable starting point on the same infinite canvas.
Story Plan
Outline your plot, characters, and world in one connected view, then expand each thread as the story grows.
What is a story arc?
A story arc is the shape a story makes over its length: how tension, stakes, and the protagonist's situation rise and fall from the first page to the last. The familiar version is Freytag's pyramid, meaning exposition, rising action, climax, falling action, resolution, and it is a useful starting diagram even though very few stories actually look like a clean triangle. What matters is not conforming to a template but knowing what shape your story has, because problems that are impossible to feel in a manuscript are obvious in a drawing.
The word is used at three different scales and mixing them up causes most of the confusion. The story arc is the shape of the whole thing. A character arc is one person's internal change across it, which frequently peaks somewhere other than the plot's climax and is more interesting when it does. A series arc runs across books or seasons and is the hardest to hold, because no single instalment contains it. A story usually has all three running at once, and the useful diagram is one that lets you see them stacked rather than one at a time.
The reason to draw it rather than outline it is that the most common structural failure is a proportion problem, and proportion is invisible in a list. An outline with forty numbered beats gives you no sense that beats twelve to twenty-six occupy half the book and contain one reversal between them. Drawn as a curve, that stretch is a flat line, and a flat line in the middle of a story is the thing readers describe as losing interest around a third of the way in. The same applies to a climax that arrives too early, a reveal with no setup behind it, and a subplot that vanishes for a hundred pages.
Storyflow is an AI-native infinite canvas, which makes the arc something you draw rather than something you infer. Describe the story and the AI lays out a spine of beats with the act breaks and midpoint marked and a first pass at where tension sits. Then you correct it, which is the part that teaches you something: move beats, mark where the tension genuinely rises rather than where you intended it to, and run character and subplot arcs as rows beneath the spine so the whole structure is stacked in one view.
HOW IT WORKS
From a story you cannot fix to a shape you can see.
No framework to commit to. Beats, a curve, and the arcs running underneath.
01
Open a canvas
Sign up in seconds. No download. Your infinite story canvas opens in the browser.
02
Describe the story
Type the premise, who changes, and what happens. The AI lays out the beats with act breaks and midpoint marked, so you start from a shape rather than a blank page.
03
Plot tension honestly
Place each beat by where the tension actually is, not where you meant it to be. The flat stretch is the sagging middle, and it is now a thing you can point at.
04
Stack the other arcs underneath
Run character and subplot arcs as rows beneath the spine. Then share a view-only link with a co-writer or editor, or export the map as an image or PDF.
Beats, tension, act breaks, and the arcs beneath.
The whole structure stacked in one view instead of read one line at a time.
AI lays out a spine from a premise
Start from a drawn arc
Describe the story and the AI produces beats across the acts with the breaks and midpoint marked. Disagreeing with a proposed shape is far more productive than inventing one from nothing.
See the AI story outline generator →
Tension plotted rather than assumed
Find the flat middle
Place beats by where the tension actually sits. A long horizontal stretch in act two is precisely what a reader experiences as losing interest, and it is invisible in an outline.
Explore the story structure software →
Character and subplot arcs as rows
Stack every arc under the spine
A subplot that vanishes for a hundred pages, or a character whose change peaks at the same moment as the plot, is a shape rather than something a reader has to tell you about.
See the subplot tracker →
Setups and payoffs connected
Check that every reveal was planted
Draw a line from each payoff back to the beat that set it up. A payoff with no line is a reveal readers will not accept, and a setup with no line is a promise you never kept.
Try the story planning tool →Unlimited boards. No object cap.
Open a canvas, describe the story, and let AI lay out the arc. Storyflow is paid-only during early access, with plans from $7.99 a month billed annually, and a Free plan launches before the end of 2026.
Unlimited story maps on an infinite canvas
Basic AI usage to generate beats and structure from a premise
Starter templates for three act, the story circle, and beat sheets
Share view-only links with co-writers and editors, no account required
BUILT FOR STRUCTURE
Proportion is the failure, and an outline cannot show proportion.
Forty numbered beats give you no sense that fourteen of them occupy half the book with one reversal between them.
Three scales, stacked
Story arc, character arc, series arc
The story arc: The shape of the whole: where tension rises, where it releases, and where the turn is. This is the spine everything else is measured against, and it is the one most writers have in their head rather than on paper.
Character arcs beneath it: One row per character whose internal state changes. The interesting cases are the ones that peak somewhere other than the plot climax, and drawing them is how you notice you have made them all peak together.
Subplot arcs: Each subplot as its own row with its own small shape. A subplot with no beat for a hundred pages is a gap you can see, and it is the most common note an editor gives.
Series arcs across instalments: For a series or a season, the arc that no single book or episode contains. It is the hardest structure to hold in a head and the easiest to represent as a row running across sections.
The frameworks as diagnostics
Use a template to notice where you differ from it
Freytag and the three act shape: The classical pyramid is a starting diagram rather than a target. Laying your story over it is useful precisely because of where the two disagree.
The story circle and cyclical shapes: Not every story is a line, and circular structures are painful to represent in a document and natural on a canvas.
Beat sheet traditions: Save the Cat and its relatives give you expected positions for the turns. If your midpoint is at seventy percent, that is either a deliberate choice or the reason act two feels long.
Your own shape: Plenty of good stories fit none of these. The board holds whatever structure yours actually has, which is the point at which a framework stops being a constraint.
AI that reads the whole board as context
Ask the map what is wrong with the shape
Generate the first arc: Describe the premise and the AI lays out beats with the standard turns positioned. The conventional version is worth seeing, because knowing it is how you decide what to do differently.
Interrogate the structure: Ask where the tension flattens, which promise made in act one is never paid off, which character has no beat in the middle third, or what the midpoint is actually reversing.
It structures, it does not write: Storyflow arranges and suggests. It does not draft your scenes, and prose written by a model reads like it, which serves nobody.
Try an alternative shape: Ask what a version with the reveal moved earlier would look like, and it builds around the beats you have placed. Nothing you positioned by hand moves.
Editors, co-writers, and the room
Take structural notes on a structure
View-only links: Send a link and an editor, a co-writer, or a critique partner sees the shape in a browser with no account. Structural notes given against a map are far more precise than notes given against a draft.
Comments on the beat in question: A note about the midpoint sits on the midpoint. Nobody reconstructs which beat a comment three weeks ago was about.
Cheaper than restructuring a draft: Rearranging a map takes an afternoon and rearranging a manuscript takes a month. That difference is the entire argument for showing the shape before the pages.
Explore templates for your project
Every template opens as a real, editable board on the infinite canvas. Pick the closest fit and make it your own.
Story Plan
Outline your plot, characters, and world in one connected view, then expand each thread as the story grows.
HOW WE COMPARE
Storyflow vs Plottr, Scrivener, and an outline document.
Each is good at its own job: Plottr is purpose-built for novel timelines, Scrivener keeps the manuscript and its research in one long-term project, and an outline is the fastest thing to write. Here is where they differ.
Storyflow
Recommended
Beats plotted against a tension curve
Character and subplot arcs stacked beneath the spine
AI generates and interrogates the structure
Setups connected to payoffs as drawn links
Manuscript drafting in the same tool
Word count targets and writing statistics
Plottr
Beats plotted against a tension curve
Character and subplot arcs stacked beneath the spine
AI generates and interrogates the structure
Setups connected to payoffs as drawn links
Manuscript drafting in the same tool
Word count targets and writing statistics
Scrivener
Beats plotted against a tension curve
Character and subplot arcs stacked beneath the spine
AI generates and interrogates the structure
Setups connected to payoffs as drawn links
Manuscript drafting in the same tool
Word count targets and writing statistics
An outline document
Beats plotted against a tension curve
Character and subplot arcs stacked beneath the spine
AI generates and interrogates the structure
Setups connected to payoffs as drawn links
Manuscript drafting in the same tool
Word count targets and writing statistics
What creators are saying
Join early creators getting structured workspaces and AI that remembers their projects
“Storyflow has sped up my workflow by at least 3x, which means more flow state and more projects I can actually ship. It truly changed the way me and my team create.”
Reilin Joey
Director & YouTuber
“One prompt gets me a structured board. But the tactics are my favorite. I run my YouTube scripts through them and my intros and retention got better. It's amazing.”
Justkay
YouTuber & Freelance Filmmaker
“I used to juggle five apps to plan a project. Now I describe what I am making and get boards, lists, and a schedule. All in one place.”
George
@fernwehchronicles
Story arc questions, answered.
What an arc is, how to draw one, and what the shape tells you.
A story arc is the shape a narrative makes across its length: how tension, stakes, and the protagonist's situation rise and fall from beginning to end. The classical version is Freytag's pyramid, with exposition, rising action, a climax, falling action, and resolution, and it remains a useful reference diagram even though few real stories form a clean triangle. The value of thinking in arcs is diagnostic rather than prescriptive. Drawn as a shape, a story reveals problems that are almost impossible to feel while reading a manuscript, chiefly a long flat stretch where nothing escalates, a climax that arrives too early, or a promise made at the start that the shape never returns to.
Draw the shape and the problem becomes obvious.
Open a canvas, describe the story, and let AI lay out the arc. No download.