How to write a novel synopsis

Every writer hits the same wall right after finishing the manuscript: the synopsis. You just spent a year building suspense, and now an agent wants you to ruin it in five hundred words. It feels wrong. It isn't. A synopsis has a different job than the novel does, and once you stop treating it like a summary, it gets much easier to write.

What a synopsis is actually for

An agent reading your synopsis is not trying to enjoy a story. They're checking whether you can plot one. They want to see that your protagonist wants something, that obstacles escalate, that the ending resolves the setup, and that the middle doesn't sag. The synopsis is a structural X-ray, not a trailer. This means withholding the ending is actively counterproductive: you must reveal who did it, who dies, who ends up together. Coyness reads as either an oversight or, worse, a sign that your plot doesn't hold up under a bright light.

Length and format

One page, single-spaced, is the safest default for a query synopsis: roughly 500 to 700 words. Some agents ask for two pages; a few request a one-paragraph version alongside it. Always check individual submission guidelines before you send anything, because agents do reject on formatting alone. In the absence of instructions, write to one page and trust that a tight page beats a padded two.

Write in third person present tense regardless of your novel's actual point of view or tense. "Maren discovers the letter" reads cleanly on the page in a way that first person or past tense summary often doesn't. Use your characters' real names on first mention, not "the protagonist" or "our hero." Introduce only the handful of characters whose actions move the plot: a synopsis with nine named characters is a synopsis nobody can follow.

Build it from beats, not scenes

The mistake almost everyone makes on a first attempt is retelling the book scene by scene. That produces a document that's either forty pages long or so compressed it reads as a shopping list. Instead, go back to your major turning points, the handful of moments that would still make sense if you stripped everything else away, and write from those.

Beat sheet -> synopsis paragraph

Opening image / status quo
Inciting incident (what breaks the status quo)
First turning point (protagonist commits)
Midpoint reversal (new information changes the goal)
Low point / all is lost
Climax (the confrontation the whole book was pointed at)
Resolution (what's true now that wasn't true before)

Each of those beats becomes roughly one to three sentences. Subplots either get a single connecting sentence or get cut entirely. If a subplot doesn't change the outcome of the main plot, it doesn't belong in the synopsis, even if it's your favorite part of the book.

Show causation, not just sequence

The single biggest difference between a synopsis that works and one that doesn't is the presence of "so" and "but." A list of events connected by "and then" reads as flat and arbitrary, even when the underlying plot is sound. A synopsis built on causation reads as a plot, because that's what causation is.

Weak (and-then chain):
Maren finds the letter. She goes to the coast. She meets Idris.
They argue. She returns home. Her mother reveals the truth.

Stronger (causal chain):
Maren finds a letter proving her mother lied about her father's
death, so she travels to the coast to confront the man who wrote
it. But he turns out to be the half-brother she never knew
existed, which forces her to decide whether exposing her mother
is worth destroying the only family she has left.

Read your draft synopsis back and count how many sentences start with a plain "then." Each one is a spot where you've described what happened without explaining why it mattered. Fix those first, before you touch word count.

Keep the emotional stakes visible

A synopsis that lists only external plot mechanics, the heist, the murder, the wedding, tells an agent you can construct a sequence of events. It doesn't tell them you can write a character worth following. Alongside each major beat, name what the protagonist wants and what they stand to lose. One clause is usually enough: "desperate to prove she isn't like her mother" does more work than an extra paragraph of backstory.

If an agent finishes your synopsis and can tell you what the book is about but not what the protagonist wants, the synopsis has failed even if the plot summary was accurate.

Cut before you polish

Write your first draft long and expect to lose a third of it. Cut world-building explanation first: agents don't need to understand your magic system's rules, only how it affects the plot's outcome. Cut secondary character names next, replacing them with roles ("her sister," "the detective") where the name itself adds nothing. Then read every sentence and ask whether removing it would change an agent's understanding of the plot. If not, it goes.

Read it aloud once you think it's done. A synopsis that's hard to say out loud is hard to follow on the page, and an agent reading fifty queries a day will not push through a sentence that requires a second attempt.

Chaptered's beat sheet view holds one line per major story beat in sequence, which is close to a synopsis already, it just is not stitched into paragraphs yet.