A logline is a one or two sentence summary of your screenplay that communicates the premise, the protagonist, the conflict, and the stakes — clearly enough that a stranger can tell whether they want to read the script. It's the first filter your story goes through in any professional context, and most loglines fail it.
The failure usually comes from one of two directions: the logline is so vague it communicates nothing ("A woman discovers her true self after a life-changing journey"), or it's so detailed it becomes a paragraph that still somehow fails to explain the core conflict. Neither gets the script read.
Here's what a logline actually needs, and how to build one.
The Four Elements
A working logline contains four things:
Protagonist — who the story is about, described by what makes them relevant to this particular story. Not "a woman" — "a disgraced forensic accountant," "a seventeen-year-old competitive chess prodigy," "the last surviving lighthouse keeper on a quarantined island." The descriptor tells us who they are in the context of the story, not just their demographic.
Goal — what the protagonist wants or needs to accomplish. This should be specific and external. "Find her missing daughter" is specific. "Come to terms with her past" is not — it's internal, and it won't drive a plot you can describe in a sentence.
Antagonistic force — what's in the way. This can be a person, a system, a situation, or sometimes the protagonist's own flaw manifested externally. The antagonistic force should create a conflict that can't easily be resolved, or there's no story.
Stakes — what happens if the protagonist fails. The stakes establish why we should care. They don't have to be global (the world won't necessarily end) but they have to be personal and specific.
The Template — and Why Not to Follow It Blindly
The standard logline template is: "When [inciting incident], a [protagonist] must [goal] before/or [stakes]."
It's a useful starting point, not a final form. Loglines that fit perfectly into the template often feel like they were written from the template rather than from the story. Use the template to make sure you have all four elements, then rewrite it to sound like a human being describing a film they care about.
Compare:
Template-fitted: "When her husband is accused of murder, a defense attorney must prove his innocence before the wrong man is executed and her career is destroyed."
Rewritten: "A defense attorney who has spent her career winning cases by any means necessary is forced to defend her husband on a murder charge — and discovers that winning this time might mean losing everything else."
Both versions contain the same information. The second one sounds like a pitch. It has a point of view and a sense of the film's specific tension.
The Irony Test
The best loglines have irony built into the premise. The protagonist is uniquely wrong for the challenge they face, or uniquely wrong for what the story will require of them.
Schindler's List: A Nazi war profiteer becomes the unlikely savior of over a thousand Jewish lives.
Die Hard: An off-duty New York cop on a trip to save his marriage finds himself the only person who can stop a hostage crisis in a Los Angeles skyscraper.
Legally Blonde: A bubbly sorority girl enrolls in Harvard Law School to win back her ex-boyfriend and discovers she's actually a gifted lawyer.
In each case, the protagonist is in some sense the wrong person for the situation — which is exactly what makes the situation interesting. If your logline has no irony, ask whether you have the right protagonist, or whether you've found the right angle on this protagonist.
What to Leave Out
The logline is not a summary. It's a premise. Leave out:
- Subplots and supporting characters (unless they are the pivot on which the central conflict turns)
- Backstory that isn't needed to understand the conflict
- The resolution (the logline describes the problem, not the solution)
- Thematic statements ("a story about the nature of identity")
- Anything in parentheses
A logline that goes into the third sentence has become a synopsis. A logline that describes what a film is "really about" has become a pitch for the film school version of the story. Keep it tight.
Testing Your Logline
Before you use a logline in any professional context, test it against these questions:
Can a stranger tell what kind of film this is? Genre is communicated in the logline even when it's not explicitly stated. "A forensic accountant discovers her missing daughter was recruited into a cult" reads as thriller. "A forensic accountant discovers her missing daughter has been living a double life in Paris" reads as drama or possibly dark comedy. The reader should know the register they're entering.
Is the conflict clear? If someone reads your logline and asks "but what happens?" — not out of curiosity but out of confusion — the conflict isn't clear enough. The central opposition should be legible from the sentence.
Are the stakes specific? "Or lose everything" is not specific. "Or watch her daughter go to prison for something she didn't do" is specific. Specific stakes are the difference between a logline that generates concern and one that generates indifference.
Does it make someone want to read the script? This is the only true test. Not whether it sounds impressive, not whether it covers all the beats — whether it makes someone curious about what happens next.
The Logline as a Diagnostic
Beyond its function as a pitch tool, the logline is one of the best structural diagnostics available. If you can't write a clean logline for your screenplay, that's not a writing problem — it's a structural problem. The story doesn't know what it's about yet.
This is worth discovering before you're three drafts in. Try writing the logline before you write the script, when you're still developing the premise. If you can't get it to one clear sentence, the premise may need more development. If it comes together easily, you have a solid structural foundation to build on.
plotwell's beat sheet view can help here: if you build your beats first and can't find a clear protagonist/goal/conflict/stakes in the beats, the story needs more thought at the structural level. The logline forces that clarity.
A logline that works is a script that knows what it is.
