The Plotting Grid: Chapters Across, Plot Lines Down
A plot grid template is a table with your chapters across the top and your plot lines down the side, and it exists for one reason: a linear outline tells you what happens, a grid tells you what doesn't happen, and that's where novels come apart. A subplot holds up if it moves at its own pace, crosses the main plot at least three times and resolves before it does; the only way to check those three conditions at a glance is the grid. Novlr and Dabble each sell their own version (a "Planning grid" for one, a "Plot Grid" for the other, as of 23 September 2026) without explaining how to fill it in. Here's how.
Why a grid and not an outline?
A novel outline like the one in how to outline a novel, filled in chapter by chapter is a list: chapter 1, chapter 2, chapter 3. It answers "what happens next?". It does not answer "where did the brother go?", because the brother is spread across the cards and you'd have to reread twenty-four of them to follow him.
The grid lays out the same information the other way. Each row is a plot line: the main plot, one or two subplots, the hero's inner arc, sometimes the antagonist. Each column is a chapter. Each cell says, in a few words, what that line does in that chapter. An empty cell is information: this line doesn't move here. Three empty cells in a row are a problem: the reader has forgotten the line.
Which plot lines go in the rows?
Four rows are enough for most novels. Beyond six, you have an ensemble novel, and the grid becomes the main tool rather than a check.
| Line | The question it asks | When it resolves |
|---|---|---|
| A. Main plot | Will the hero get what they want? | In the last chapter or just before |
| B. Subplot | A different question, often carried by another character | Before A ends, to free up the last act |
| C. Inner arc | Will the hero change? | At the moment A plays out: the change makes the win possible |
| D. Antagonist | What is the opposing force preparing? | It crosses A at the midpoint and in the finale |
Line B is the one first novels handle worst: too present at the start, absent in the middle, wrapped up in a sentence at the end. The three character types that carry a subplot best are described in supporting character types.
A filled-in example: "The Lost Property Office"
Invented novel, twelve chapters to fit on the page (a real one would have twenty-four or thirty). Louise works at a railway station's lost property office and opens a suitcase full of letters that were never sent (A). Her brother Sami is about to lose his bakery (B). Louise has never left the city and refuses to think about it (C). The station manager, Verdier, wants to close the office (D).
| Line | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A. Suitcase | Finds the suitcase | Reads the first letter | Identifies the writer | Meets the writer's daughter | Discovers the letters were for Verdier | Verdier denies it | Louise confronts Verdier | Verdier reads the letters | Louise posts the last letter | |||
| B. Sami | Sami announces the closure | Louise lends her savings | Sami refuses the money | Sami sells the oven | Louise finds a buyer | Sami signs | ||||||
| C. Leaving | Turns down a job in Lyon | Thinks about the job again | Buys a ticket, tears it up | Boards the train | ||||||||
| D. Verdier | Announces the office will close | Inspection | Moves the shelves out | Suspends Louise |
The grid is read in two passes. First row by row: line C has only four cells out of twelve, and a five-chapter gap between 4 and 8. That's an inner arc done in dotted lines, which the reader will experience as a decision from nowhere in chapter 12. Then column by column: in chapter 9, only line B moves; the main plot is paused at the moment it should be accelerating towards the finale. Two problems a linear outline would not have shown, because each chapter, taken alone, reads perfectly well.
What goes in a cell?
A verb and an object. "Sami refuses the money", not "moving scene where Sami, his pride wounded, refuses". The grid is for seeing, not for writing. Three codes are enough alongside the text: an empty cell (the line sleeps), a dot (the line is mentioned without advancing, an allusion, a thought), a phrase (the line moves).
When a line gets a dot three times running, that's a signal too: the reader knows the line exists, but no longer expects anything from it. A mention is not a move.
One last reading cue: crossings. A cell where two lines touch (Louise lends Sami her savings, which is B, but it's also C, since she's tying herself a little tighter to the city) counts as two cells. Mark it in both rows. A novel where no cell belongs to two lines is a novel where the plots merely alternate; they should be complicating each other.
What the Archivist spots in the grid
In the Sagoræ workshop, the grid is built from the outline and the profiles: each line is attached to a character or a stake, and the Archivist reads the written chapters to check that what the grid announces actually appears in the text. When a line vanishes for three chapters running in the written pages, even if the grid planned a cell, it flags it: "Sami doesn't appear in chapter 4, 5 or 6, while the grid has his refusal in 6." It doesn't suggest a scene; it shows the gap between what you planned and what you wrote. The same reading applies to places and chronology, as explained in keep track of characters, places and timeline.
A The Archivist · Continuity keeper Pre-recorded demo
The Archivist checks chapter 14 of "Bellécume"
The Archivist
I compared chapter 14 with the sheets and the timeline. Three things to check:
- Scar. Nils's sheet says the scar is on his right cheek (chapter 5, the fall on the rocks). Here it is on the left.
- Timeline. Chapter 12 ends "in the first week of May". Chapter 14 happens "in the March rain". A deliberate flashback, or a slip?
- Location. Elea left Bellécume in chapter 11 for the Isle of Sleepers. She cannot have written "from Bellécume" the day before, unless she came back off-page.
Nothing to report on Theodore: he has been the lighthouse keeper since chapter 3 and his sheet lists no travel.
The Archivist
Noted. I suggest you change "left" to "right" and "March" to "May" in your text; I will not edit it myself. For Elea, as soon as chapter 13 is in the novel I will update her location and the alert will disappear. Do you want me to add "back in Bellécume, chapter 13" to her sheet in the meantime?
Pre-recorded simulation. The Archivist reads the sheets, locations and timeline of the novel; it flags, the author decides.
Fixing what the grid shows
An empty cell is rarely filled by writing one more scene. Most often, you move: the scene where Louise thinks about the job again (C, chapter 4) slides to chapter 6, where nothing was happening for her, and the five-chapter gap becomes a two-chapter gap. Or you merge: Verdier can suspend Louise in chapter 9 rather than 8, which puts the antagonist back into the empty column. The techniques for repairing without rewriting are detailed in how to find and fix plot holes.
Frequently asked questions
How many subplots should a novel have? One or two for an 80,000-word novel with a single point of view. Each subplot should cross the main plot at least three times and resolve before it does.
Can a subplot be more interesting than the main plot? If the grid shows that, they're often the wrong way round: the line you call a subplot carries the novel's real question. Swap the rows and reread.
What does a plot grid do that an outline doesn't? The outline says what happens chapter by chapter; the grid shows, line by line, where each one moves, sleeps or disappears. The two complement each other.
When should you fill in the grid: before or after the first draft? Both. Before, to distribute the lines; after, while rereading, to check that the text does what the grid announced.
If you want the Archivist to tell you which thread has gone to sleep, Sagoræ gives you a free trial, no card required.
✒️ Read next: How to Outline a Novel: A Real Outline, Filled In Chapter by Chapter · Plotter vs Pantser: Do Outliners Actually Finish More Novels? · Save the Cat Beat Sheet for Novels: The 15 Beats Scaled to 80,000 Words
Write your novel in a real workshop: a focused editor, characters, story structure and AI coaches that guide you without writing for you. Start for free, no commitment.