How to Write a Prequel

A prequel — a story set before an existing work, telling events that precede it — is a popular way to expand a series or beloved story, exploring origins, backstory, and the events that led to the original. Prequels offer the appeal of returning to a known world and discovering how things came to be. But they pose a distinctive challenge: the reader often already knows where the story ends up (since it precedes the original), which can drain tension if not handled deftly. Plus, prequels demand careful continuity with the original. Understanding how to write a prequel that stands on its own and creates tension despite a known outcome helps you do the form justice.

This guide covers how to write a prequel.

What a prequel is

A prequel is a story set chronologically before an existing work, depicting events that precede the original story — often the origins, backstory, or earlier events that led up to it. Where a sequel continues a story forward, a prequel goes backward, exploring what came before. Prequels can tell: the origin of a character (how the protagonist or villain became who they are in the original), the events leading to the original's situation, the earlier history of the world or characters, or a story about a younger version of the cast. The appeal is returning to a beloved world and discovering how things came to be — the satisfying illumination of origins and backstory. Prequels are common in series and franchises. At its core, a prequel is the story before the story — exploring the past that shaped the original.

The known-outcome challenge

The prequel's signature challenge is that readers often already know the broad outcome — because the prequel precedes a story they've read. If readers know the original, they know where the characters end up, what survives, and the eventual situation, which can drain tension: why worry about a character's fate if you know they'll be alive (and in a known state) in the original? This dramatic-irony problem is the prequel's central craft challenge. Solutions: create tension around how things happen rather than whether (the journey, not just the destination), develop new situations, characters, and stakes the reader doesn't know the outcome of, use the dramatic irony deliberately (the reader's foreknowledge can create poignancy or tension of its own — watching events unfold toward a known, perhaps tragic, end), and craft emotional and character stakes that engage regardless of plot foreknowledge. So design the prequel to generate tension and interest despite the known outcome — through the how, through new uncertainties, and through emotional engagement. Overcoming the known-outcome challenge is essential to a gripping prequel.

Maintain continuity with the original

A prequel must maintain continuity with the original work — everything in the prequel must be consistent with what the original established, since the prequel leads into it. This means the prequel's events, characters, world, and details must align with the original: the prequel's ending state must match the original's beginning state, established facts and history must be honored, characters must be consistent with (and plausibly become) their original-work selves, and nothing in the prequel can contradict the original. This continuity is demanding — you're writing toward a fixed, known destination, and must hit it precisely while honoring all the original established. A series bible or careful tracking of the original's facts is invaluable. Continuity errors (the prequel contradicting the original) badly undermine a prequel and frustrate fans. So track the original's established facts rigorously and ensure your prequel is fully consistent with — and properly leads into — it. Tight continuity with the original is non-negotiable for a prequel.

Make it stand on its own

A crucial principle: a prequel should stand on its own as a complete, satisfying story — not merely a setup or appendix to the original, requiring the original to be enjoyed. While prequels reward readers of the original (with recognition, illumination of origins, and continuity), a good prequel is also a real story in its own right, with its own protagonist, conflict, stakes, arc, and satisfying resolution — engaging whether or not the reader knows the original (and ideally readable as an entry point). A prequel that's only meaningful as backstory to the original, with no independent story value, is weak. So give the prequel its own complete narrative — its own dramatic question, character journey, and resolution — that satisfies on its own terms while enriching the original. The best prequels are good stories first, prequels second. Make the prequel a complete, compelling story that stands on its own, not just a prelude to the "real" story. Independent story value is essential.

Add value, don't just fill gaps

The best prequels add genuine value — they illuminate, deepen, and enrich the original in meaningful ways, rather than just mechanically filling in backstory gaps. A prequel should enhance the reader's understanding and appreciation of the original: revealing the origins that give the original's characters and situations new depth, exploring backstory that recontextualizes or enriches the original, or telling a compelling story that expands the world meaningfully. A prequel that merely explains things better left mysterious, or fills gaps no one needed filled, can actually diminish the original (over-explaining can sap mystery and power). So aim for a prequel that adds something valuable — depth, meaning, a great story — to the original and its world, rather than just dutifully depicting "what happened before." Ask: does this prequel enrich the original and stand as a worthwhile story, or just fill gaps? Add genuine value, and the prequel justifies its existence and honors the original. Enrich, don't just fill in.

The bottom line

Write a prequel — the story set before an existing work — by overcoming its signature known-outcome challenge: since readers often know where things end up, generate tension through how events unfold (not just whether), through new uncertainties and stakes, through deliberate dramatic irony, and through emotional engagement, so the prequel grips despite foreknowledge. Maintain rigorous continuity with the original — the prequel must align with and properly lead into everything the original established, hitting its fixed destination precisely (track the original's facts carefully). Make the prequel stand on its own as a complete, satisfying story with its own protagonist, conflict, and arc, engaging whether or not the reader knows the original. And add genuine value — illuminating and enriching the original meaningfully, not just filling backstory gaps (which can over-explain and diminish). Prequels offer the pleasure of discovering how a beloved story came to be; written to stand alone, maintain continuity, create tension despite a known end, and add real value, a prequel honors the original while standing as a worthy story itself.

Frequently asked questions

What is a prequel?

A prequel is a story set chronologically before an existing work, depicting events that precede the original — often the origins, backstory, or earlier events that led up to it. Where a sequel continues a story forward, a prequel goes backward, exploring what came before: a character's origin, the events leading to the original's situation, or the earlier history of the world. It's "the story before the story."

How do I create tension in a prequel when readers know the outcome?

Generate tension around how things happen rather than whether (the journey, not the known destination), develop new situations, characters, and stakes the reader doesn't know the outcome of, use the dramatic irony deliberately (foreknowledge can create poignancy watching events unfold toward a known end), and craft emotional and character stakes that engage regardless of plot foreknowledge. Design the prequel to grip despite the known outcome.

How important is continuity in a prequel?

Essential — everything in the prequel must be consistent with what the original established, since the prequel leads into it. The prequel's ending state must match the original's beginning, established facts and history must be honored, and nothing can contradict the original. You're writing toward a fixed, known destination, so track the original's facts rigorously (a series bible helps). Continuity errors badly undermine a prequel.

Should a prequel stand on its own?

Yes — a good prequel is a complete, satisfying story in its own right, with its own protagonist, conflict, stakes, arc, and resolution, engaging whether or not the reader knows the original (ideally even as an entry point). A prequel that's only meaningful as backstory, with no independent story value, is weak. The best prequels are good stories first, prequels second.

Related reading

• How to Plan and Write a Series
• How to Write a Series Bible
• How to Write a Villain Readers Remember