Plotting/8 min read

Plotting With Index Cards

A stack of index cards is the cheapest plotting tool there is and still one of the best. One scene per card means you can see the whole book on a table, move a chapter in two seconds, and spot the hole in act two that a document hides. Nabokov drafted on index cards; screenwriters still pin them to corkboards. Here is a method you can run this weekend.

A corkboard covered in rows of colored index cards, with a hand pinning one card into a new position

Why cards beat a document

An outline in a document reads top to bottom, so you judge it the way a reader would: one scene at a time. Cards let you judge it the way an editor would, all at once. Three things become easy that are hard in a file.

Reordering

Moving a scene is picking up a card. You try the new order before you rewrite a word.

Seeing gaps

A long run of one color, or a row with five cards where the others have ten, shows up from across the room.

Cutting

Pulling a card off the board feels small, so you do it. Deleting three pages from a file rarely feels that way.

What goes on a card

A card that only says "fight in the market" will mean nothing to you in three weeks. Five short zones keep every card useful without turning it into a page.

An index card divided into labeled zones: Scene at the top, then Goal, Conflict and Turn, with POV and Place along the bottom edge
  • Scene: a headline you could say out loud, such as "Ana steals the ledger".
  • Goal: what the point-of-view character wants in this scene.
  • Conflict: what stops them.
  • Turn: how the situation is different at the end. If nothing changed, the card is a candidate for cutting.
  • POV and place: in a corner, so you can scan for imbalance.

A simple color code

Color is what lets you read the board at a glance. Pick one thing to track and stick to it; four colors are usually enough.

Card colorTracksWhat it shows you
WhiteMain plotThe spine. If whole rows lack white, the main story has stalled.
BlueRomance or relationship subplotWhether the second storyline gets steady attention or vanishes for 80 pages.
YellowSecond point-of-view characterPOV balance across the book.
PinkClues, setups and payoffsThat every setup has a later payoff card, and the reverse.

Out of colored cards? Use white cards and a colored marker stripe across the top edge. It reads just as well on a board.

The 40-card board

The best-known layout comes from Blake Snyder's Save the Cat: four rows on a corkboard, about ten cards per row. Row one is act one, row two runs to the midpoint, row three runs from the midpoint to the low point, and row four is act three. Snyder built it for screenplays, where forty scenes is about right. For a novel, let each card stand for a chapter or a key scene; the fixed count still forces you to choose what matters.

A corkboard with four labeled rows, Act 1, Act 2A, Act 2B and Act 3, each holding ten color-coded index cards

Lay out the cards you already know first, usually the opening, the midpoint and the ending. Then fill toward them. Empty slots are useful: they tell you exactly where the story is still unknown.

If you prefer a looser layout, three rows for the three acts work too. Our guide to three-act structure covers where the turning points sit.

The shuffle test

Use this once the board is full. It finds the scenes that are not pulling their weight.

How to run the shuffle test
  1. Take any two adjacent cards and swap them.
  2. Read the new order aloud, headline to headline.
  3. If the story still makes sense, the two scenes are not connected by cause and effect. One of them may be filler, or both need a stronger link.
  4. If the swap breaks the story, good: those scenes depend on each other. Put them back.

Strong plots read as "and therefore" or "but" from card to card, rarely as "and then". The scene and sequel pattern is a good way to repair a pair that fails.

Paper, Scrivener, or an AI outline

Cards do not have to be paper. Here is how the three common options compare for plotting.

ComparePaper cardsScrivener corkboardAIWriteBook outline
One card isWhatever you decide, usually a sceneOne document, with its synopsis on the cardOne chapter
What the card holdsYour handwritingA synopsis you type, plus labels and statusPlot events, locations, twists, character interactions and a word count target
ReorderingMove it by handDrag cards; the manuscript order followsAdd, delete and reorder chapters
Getting a first draft of the cardsYou write them allYou write them allGenerated from your idea, then edited by you or with AI
Turning cards into proseType it upWrite in each documentEach chapter card drives its own chapter draft

Many writers mix them: rough out scenes on paper, then move the agreed order into software. If you are weighing writing apps, see our Scrivener comparison.

Your first card session, step by step

  1. 01Write one card for every scene you already know, in any order. Do not plot yet.
  2. 02Sort them into the four rows. Leave gaps where you are unsure.
  3. 03Color-code or stripe each card by plotline.
  4. 04Fill the gaps with new cards, working toward the big turns.
  5. 05Run the shuffle test on every adjacent pair and cut or merge the weak ones.
  6. 06Photograph the board, then number the cards in order before anything falls off.
  7. 07Group cards into chapters, and you have an outline ready to draft from.

Common mistakes

  • Writing paragraphs on cards. If it does not fit in five short lines, it is two scenes.
  • Plotting before you know the ending. Put the last card up first, even if it changes later.
  • Treating the board as finished. Cards are cheap; move them whenever a draft teaches you something.
  • Never photographing it. One cleaning day or one open window can scramble a month of work.
  • Using cards to avoid writing. A board is done when you can draft the next chapter, not when it looks complete.

The digital version, with a head start

The slowest part of card plotting is the blank stack. In AIWriteBook the outline builder gives you a card for each chapter, generated from your book idea, with plot events, locations, twists and character interactions already filled in. You then do what you would do with paper: add chapters, delete the weak ones, move them into a better order, and rewrite any card yourself or with AI.

Prefer to keep your paper board? The free outline generator drafts a chapter-by-chapter outline you can copy onto cards.

Card template

Copy this layout onto a 3x5 or 4x6 card. Keep each line short.

Tap the box to select it, then copy.

SCENE: ______________________
GOAL: _______________________
CONFLICT: ___________________
TURN: _______________________
POV: ________  PLACE: ________
#____  (number it once the order is set)

Start with ten cards

You do not need forty cards on day one. Write the ten scenes you are sure of, lay them out, and look at the gaps. Whether you are a committed plotter or a pantser who plots only when stuck, the cards will show you the story's shape faster than any document. For more ways to plan and draft, see the AI writing assistant guide.

From cards to chapters

Turn your board into a book

Lay out your chapters, reorder them until the story clicks, and draft each one with AIWriteBook.

Join 50,000+ authors writing with AIWriteBook.