Logline
Quick answer: A logline is a one-sentence summary of a story's protagonist, goal, conflict and stakes. Learn the formula, its screenwriting roots and how fiction writers use it.
A logline is a one-sentence summary of a story that names its protagonist, their goal, the central conflict and the stakes. In other words, it is the story reduced to its engine: who wants what, what stands in the way, and why it matters. Done well, a logline makes a stranger want the whole thing; done honestly, it tells the writer whether there is a whole thing to want.
The term comes from Hollywood, where studio readers logged one-line descriptions of scripts, and it remains the screen trade's basic currency. Fiction writers borrowed it, and it now appears in query hooks, pitch events and contest planning, anywhere a story must survive being said aloud in one breath.
The anatomy of a working logline
The standard skeleton runs: when a disruption strikes, a specific protagonist must pursue a goal against an opposing force, or face defined stakes. Specificity does all the work. A young woman fights injustice is dead on arrival; a governess falls in love with an employer whose house hides a locked and dangerous secret is alive, because role, desire and threat are all concrete. Notice that names are optional; the protagonist's defining trait or situation usually beats a name a stranger cannot picture.
Irony is the seasoning the film tradition prizes: the cop afraid of water stationed on an island, the shark hunter who cannot swim. When a logline contains a built-in contradiction, the listener's mind starts writing scenes, which is exactly the reaction you are selling.
Why the exercise is diagnostic
A logline that will not cohere is usually reporting a story problem, not a phrasing problem. If you cannot name the protagonist, the story may not have decided whose it is. If the goal will not compress, the plot may be a sequence of happenings rather than a pursuit. If the stakes sound optional, the middle will sag no matter how fine the sentences are. Writers who draft a logline before a story, even pantsers who then ignore it, report fewer collapsed middles.
This is why the tool scales down to short fiction so well. A contest entry has a few hundred words to establish want, obstacle and cost, the same trinity a judge is weighing when scoring structure, and a one-line version written in advance keeps the draft pointed at them.
Writing one without agony
Draft ten bad loglines fast rather than one perfect sentence slowly. Vary which element leads: the protagonist, the disruption, the irony. Read them aloud, because loglines are a spoken form, and keep the one a listener repeats back correctly. Then test it on someone who has not read the story; if their guess at the plot excites you more than your actual plot, revise the plot, which is the exercise's secret second use.
The trap is cramming. A logline carries one protagonist, one goal, one opposition; subplots, themes and twists stay in the story. Twenty-five to fifty words is the working range, and shorter usually wins.
Classic stories, compressed
Practise on books everyone knows and the anatomy becomes visible. Mary Shelley's Frankenstein: a brilliant student builds a living creature from dead matter, then abandons it, and the creature returns to take everything he loves. Stevenson's Strange Case of Dr Jekyll and Mr Hyde: a respectable doctor invents a potion that frees his hidden appetites, until the hidden self stops asking permission. Each line names its protagonist by role, states the act, and lets the stakes rise out of the premise itself.
Notice what the compressions leave out: subplots, secondary characters, themes, endings. A logline is not the story's meaning; it is the story's engine, and engines are small.
Compress one classic a day for a week, keeping each line under forty words, and the skeleton of protagonist, goal, opposition and stakes will start to surface automatically in your own premises. The exercise costs ten minutes and permanently changes how you hear story ideas.
Neighbours and opposites
A logline differs from a tagline, the advertising slogan on a poster, which evokes mood without summarising, in space no one ever survived hearing you scream, roughly. It differs from a premise, the underlying what-if before a protagonist is attached, and from a synopsis, the full spoiler-complete map. Inside a query letter, the logline usually serves as the hook, and comp titles then position what the logline has described. Elevator pitch is the business world's looser cousin, a spoken minute rather than a sentence.
What poets can take from this
- Include a specific protagonist, a goal, an opposition and stakes in one sentence.
- Prefer defining traits over names; strangers cannot picture a name.
- Hunt for the irony in your premise and put it in the line.
- Draft ten fast versions and keep the one listeners repeat back correctly.
- Write the logline before drafting and let it diagnose the story's engine.
- Compress one classic story a day for a week to train the reflex.
Try it yourself
Write loglines for three stories you have already finished, then one for a story you have not yet written. Draft the new story this week and check afterwards whether the finished piece still matches its line, and which of the two improved.
Questions
How long should a logline be?
One sentence, ideally twenty-five to fifty words. It should name the protagonist, goal, conflict and stakes and still be sayable in one breath, because loglines are tested aloud.
What is the difference between a logline and a tagline?
A logline summarises the story's engine for industry readers; a tagline is advertising copy that evokes mood for audiences. One informs, the other seduces, and neither can do the other's job.
Do short stories need loglines?
They are never required, but writing one is a fast diagnostic: if a story's want, obstacle and stakes will not fit in a sentence, the draft usually has a structural gap worth finding early.
By the Writory editorial team, reviewed by working poets. Updated July 2026.
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