How to Outline a Novel Series

To outline a fantasy novel, define four things before drafting: your protagonist's want versus need, the central conflict, the major plot beats in genre order, and your ending. A fantasy novel of 100,000–150,000 words (epic); 80,000–100,000 (standard) maps to roughly 30–50 chapters, so a scene-by-scene outline will hold a similar number of scenes across three acts. Build the genre's required beats — ordinary world established, call to adventure / inciting incident, refusal or hesitation — into the structure from the start rather than retrofitting them later.

This guide walks through each step: why fantasy needs a genre-specific outline, defining your core concept, adapting three-act structure, building the scene-by-scene plan, mapping character arcs, and using AI to stress-test the whole thing.

Not all outlines are created equal, and the outline that works for a literary novel will fail a fantasy writer. Fantasy fiction operates by specific structural rules — Fantasy often follows the hero's journey, but the best modern fantasy subverts it — and your outline needs to build those rules into its architecture from day one.

The consequences of not outlining a fantasy specifically are predictable: you'll get 30,000 words in and realise your structure doesn't support the genre's requirements. In a thriller, you'll have built tension without a payoff mechanism. In a romance, your dark moment will feel unmotivated. In a mystery, you'll discover your clues don't actually lead anywhere.

The good news: fantasy is actually easier to outline than literary fiction precisely because the genre has clear structural expectations. You're not inventing the architecture from scratch — you're fulfilling a proven blueprint while making it uniquely your own.

Before you write a word of prose, your outline should answer: Who is my protagonist and what is their want vs. need? What is the central conflict? Where are the major plot beats? What is the thematic argument of the story? Only when you can answer all four questions confidently should you open a new document and start chapter one.

Before you build a scene-by-scene outline, you need to crystallise the story's core concept in a single sentence — what the industry calls the "logline." A strong fantasy logline contains: a protagonist, their want, the obstacle, and the stakes.

For fantasy fiction specifically, the logline should also imply the genre's emotional promise. A thriller logline should feel tense; a romance logline should feel emotionally loaded; a mystery logline should raise a question.

Once your logline is solid, expand it into a paragraph synopsis (the "elevator pitch") and then into a page synopsis. This hierarchical expansion forces you to identify any holes in your concept before you've committed 80,000 words to it. The holes will appear at the synopsis stage — address them there, not in revision.

For fantasy specifically, your pre-outline should establish: a distinctive magic system with rules and costs (how will you deliver on this?), rich world-building that feels lived-in rather than explained (where does this appear?), and the resolution of the central conflict (know your ending before you begin). This isn't about removing the joy of discovery — you can discover the texture and specifics as you write. But the skeleton should be understood before you start.

The three-act structure is the most battle-tested story architecture in existence, and fantasy fiction uses it with specific genre modifications. Here's how to apply it:

Act One (0–25% of word count — approximately 25,000 words): Establish your world and protagonist. Ordinary world established. End Act One with a clear point of no return that makes the story's central conflict unavoidable.

Act Two First Half (25–50%): The protagonist engages with the central conflict. Refusal or hesitation. Build momentum through a series of escalating complications. The midpoint is crucial — it shifts the protagonist from reactive to active.

Act Two Second Half (50–75%): Escalate further. Trials and education (learning magic, forming alliances). End this section with the "all is lost" moment — the protagonist's lowest point before the climax.

Act Three (75–100%): Major setback / loss. The climax and resolution. For fantasy specifically, this section should deliver on the genre's core emotional promise: a conflict between fundamental forces or ideologies.

The most common three-act failure in fantasy is the sagging second act. Solve this by ensuring every scene in Act Two makes the protagonist's situation more complicated or difficult than the scene before it. Each scene should earn its position by advancing the plot AND revealing character.

Once your three-act structure is solid, expand each act into individual scenes. A scene-by-scene outline for a 100,000–150,000 words (epic); 80,000–100,000 (standard) fantasy novel will have 30–50 chapters scenes/chapters — roughly three to five scenes per act-segment.

For each scene, your outline entry should answer: What is the goal of the protagonist entering this scene? What is the conflict (the obstacle to that goal)? What is the outcome — does the protagonist succeed or fail (ideally: fail in a way that creates new complications)? How does this scene change the story's direction?

This "Goal-Conflict-Outcome" structure for scene planning is borrowed from the work of writing teacher Jack Bickham, and it remains the most reliable tool for ensuring every scene in your manuscript earns its place. In fantasy specifically, where pacing is epic fantasy often has slower, more atmospheric pacing than thrillers — readers want to inhabit the world; YA and romantasy fantasy run faster, every scene must justify its existence with story momentum.

Plot the scenes you're certain of first — the major beats. Then fill in the scenes between them. The "fill-in" scenes are where you develop character, build world, and plant seeds you'll harvest later. In fantasy, these connective scenes are also opportunities to plant clues, establish relationships, or develop the antagonist.

Once your full scene outline is complete, read it in one sitting as if it were the finished novel. This is your chance to identify: pacing problems (too many scenes in a row with the same emotional register), structural weaknesses (an act that's too short or too long), and missing scenes (where you've jumped from A to C without the necessary B).

The most sophisticated outlining mistake is treating character arc and plot arc as separate concerns. In the best fantasy fiction, they are the same arc expressed in two modes: external (what happens) and internal (what the protagonist becomes).

Map each major character's arc alongside your scene outline. For your protagonist: where are they emotionally and psychologically at the start of each act? The external plot should be applying pressure that forces internal change. By Act Three, your protagonist should be a measurably different person than they were in the opening scene — and this change should be the product of what they've experienced in the plot.

In fantasy, the character archetypes you'll develop include the reluctant chosen one, the morally complex mentor, the villain with a coherent worldview, the loyal sidekick with their own arc, the antagonist who might be right. Each of these characters needs their own abbreviated arc — they grow and change in response to the events of the story, even if less dramatically than the protagonist.

For your antagonist (or the force that opposes your protagonist), map their logic: why do they do what they do, and does it make internal sense even if it's morally wrong? The most compelling fantasy antagonists have coherent worldviews. Their methods may be monstrous; their motivation should be understandable.

In your outline, mark the scenes where character change occurs — these are often the quieter scenes between action, the ones new writers are most tempted to cut. Don't cut them. They are where your reader falls in love with your characters, and they are what makes the emotional beats of the climax land.