A logline is a short description of a film’s central dramatic premise, usually written in one or two sentences. It gives a reader enough information to understand who the story follows, what that person is trying to do, and what makes the situation difficult.
That sounds straightforward until you try to write one.
Consider this: A troubled detective must overcome his past to stop a dangerous killer before it’s too late.
There is nothing obviously missing. We have a protagonist, a problem, danger and urgency. Yet the sentence could describe dozens of thrillers.
That is where logline writing becomes difficult. You are not simply trying to fit the right ingredients into a short sentence. You have to decide which details make someone see your film rather than a familiar version of it.
Start With the Story Engine
Writers often start shortening too early. Before worrying about whether your logline is 25, 30 or 40 words long, make sure you can describe what actually drives the film.
Take this premise: A chef struggles to save his restaurant while dealing with personal problems.
It gives us the general situation, but “personal problems” could lead almost anywhere. We still cannot picture the particular conflict that will carry the story.
Now consider: After losing his sense of taste, an obsessive chef hides his condition while fighting to keep his failing restaurant open long enough to earn the review that could save it.
The important change is not simply that the second version contains more detail. The details now interact. The protagonist’s profession matters because of his condition. His condition complicates his goal. His goal gives the story direction. The approaching review creates pressure.
That interaction is the story engine you are trying to preserve when you write the logline. If you cannot find it, ask yourself:
- Who has to act?
- What are they trying to accomplish?
- What keeps making that difficult?
- What makes this particular combination different from a similar film?
You may discover that you already know the answers and simply need better wording. You may also discover that one of those questions is still unresolved in the story itself. Both discoveries are useful.
What Does a Logline Need?
There is no single arrangement that fits every film, but several pieces of information tend to do most of the work.
A protagonist we can quickly understand
Usually, a useful description tells us more than a character’s name. “A disgraced homicide detective” immediately gives the reader information that may affect the story. “John” does not, unless we already know who John is.
Choose the characteristic that matters to the conflict rather than trying to summarize the character.
Something the protagonist is trying to do
This is where otherwise promising loglines often become hazy.
A character may need to forgive herself, accept grief or learn to trust again. Those things can be central to the screenplay, but they do not necessarily tell us what we will watch her do for the next two hours.
Look for the action carrying the story. Is she trying to expose someone? Escape somewhere? Win something? Rescue someone? Keep a secret? Rebuild a relationship? Solve a disappearance?
The internal journey can remain underneath that action.
Resistance
Something has to make the protagonist’s objective difficult.
That resistance does not always have to be a conventional villain. It might come from another character, an institution, an environment, a physical limitation, a social situation or the protagonist’s own behavior.
What matters is the relationship between the objective and whatever keeps interfering with it.
Pressure
Stakes are useful when they tell us why the outcome matters.
You do not necessarily need to bolt an “or else…” phrase onto the end of every logline. Sometimes the consequence is already obvious. If a parent is trying to find a missing child, the basic stakes do not need much explanation.
Add pressure when it changes or sharpens our understanding of the situation.
A Formula Can Help, but It Cannot Make the Decisions for You
When the story is clear but the sentence refuses to come together, a basic structure can be useful: When [triggering event] disrupts the life of [specific protagonist], they must [goal or action] despite [central resistance], or [stakes].
Think of it as a drafting aid. For example, it may reveal that you can describe the protagonist and inciting event but still cannot say what the protagonist spends the film trying to accomplish. That is valuable information.
What the formula cannot do is tell you which details make the premise distinctive. You can fill every slot and still end up here: When tragedy strikes, a troubled journalist must expose a powerful enemy before everything she loves is destroyed.
The sentence is structurally complete. The movie remains difficult to picture.
An ensemble story may also resist a protagonist-centered template. A quieter character drama may not need an explicit antagonist. Another film may communicate its stakes so clearly through the situation that adding them again only makes the sentence heavier.
Use a template when it helps you see the story more clearly. Drop it when you find yourself writing for the template instead of the film.
How to Write Your Logline
Begin with a version that is allowed to be too long. Write two or three sentences explaining the central dramatic situation. At this stage, clarity matters more than elegance. Identify what changes for the protagonist, what they try to do afterward, and what creates the main resistance.
Then look at the details you have included. Some will be doing real work. Others may matter enormously in the screenplay while contributing very little to the logline.
Suppose removing a detail changes the kind of protagonist we imagine, the objective, the conflict or the pressure surrounding it. That detail is probably carrying weight.
If removing it changes almost nothing, leave it out for now. Once you know which information has to survive, build the shorter version around it.
This order matters because shortening a logline before understanding its essential information can produce a sentence that is concise and useless.
Watch for Placeholder Language
During revision, pay attention to phrases that sound dramatic without showing much of the story:
- Faces unexpected challenges
- Confronts the past
- Fights against the odds
- Embarks on a journey
- Discovers what really matters
These phrases are not automatically wrong. Sometimes they accurately describe part of the film. The trouble begins when they occupy the space where the actual story should be.
If your protagonist “faces unexpected challenges,” what happens? If she “confronts her past,” what is she forced to do? If he “fights against the odds,” what is he trying to achieve and what is stopping him?
Replacing a vague phrase with a more dramatic adjective rarely solves this problem. A concrete action or conflict usually tells us more.
Try the Swap Test
Read your logline and imagine replacing the profession, location or villain with something similar. Would essentially the same sentence still work?
Consider: A detective with a dark past races against time to stop a ruthless killer. Change “detective” to “FBI agent.” Change “killer” to “terrorist.” Very little happens to the premise.
That tells you the sentence is relying on interchangeable information.
Now compare: A detective who falsified evidence to convict a serial killer must find the real murderer when an identical killing threatens to expose the case that built his career.
The detective’s history is no longer background decoration. It creates the present problem. That is the kind of specificity worth looking for.
Then Try Removing Something
Another useful revision method is simpler: delete a phrase. Read the logline again. Did the film you imagine materially change?
If the answer is no, that phrase may not need to be there.
This is particularly helpful when you know the screenplay so well that everything feels essential. A supporting character can be crucial to Act Two and still have no reason to appear in the logline. The same is true of backstory, subplots and secondary reversals.
The question is not whether the detail matters somewhere in the screenplay. It is whether the reader needs it to understand the central dramatic premise.
When Rewriting the Sentence Stops Helping
Sometimes the wording really is the problem. You know exactly what the movie is, but every sentence you write is awkward or too long.
Keep editing. There is another situation worth recognizing, though. You rewrite the logline again and again, yet every version remains vague because you cannot comfortably answer one of these questions:
What does the protagonist actually want? What do they spend the film doing? What keeps them from doing it? What makes this situation different from other stories built around a similar premise?
At that point, changing verbs may not be the most useful next move. Go back to the story question that is giving you trouble.
This does not mean a difficult logline proves that a screenplay is broken. Stories are more complicated than that. It simply means the difficulty has shown you where some uncertainty remains.
Logline Examples: What Changes During Revision?
A generic thriller
Weak: A detective must face his troubled past while hunting a dangerous killer. “Troubled past” and “dangerous killer” tell us very little about this particular story.
Revised: A detective who falsified evidence to convict a serial killer must find the real murderer when an identical killing threatens to expose the case that built his career. The revision connects the detective’s history directly to the present investigation. We can now see a conflict that belongs to this premise.
A story dominated by an internal goal
Weak: A young musician struggles to find herself and follow her dreams. We understand the emotional territory, but it is difficult to imagine the dramatic action.
Revised: After losing her scholarship, a perfectionist violin student joins a chaotic street orchestra to win the competition that could keep her in music school. The internal journey has not disappeared. It now has an external situation through which the screenplay can explore it.
A logline carrying too much plot
Overloaded: After moving home following his father’s death, a failed architect reconnects with his sister, discovers an old map in the family workshop, learns that his father secretly designed a lost building, meets a local historian and begins searching for it while a developer tries to buy the property.
There may be a place for every one of those events in the screenplay. Giving them equal weight here makes it difficult to tell which conflict drives the film.
Revised: After his estranged father’s death, a failed architect follows the blueprint for a building that officially never existed, racing a developer who wants the last evidence of it destroyed. Several events are gone, but the central relationship is easier to see.
How Long Should a Logline Be?
One concise sentence is a useful target. Some premises work better in two short sentences.
You will also encounter advice recommending limits such as 25, 30 or 50 words. A strict limit can be a good editing exercise because it forces you to make decisions. It should not distract you from what the sentence is supposed to accomplish.
If you have started explaining supporting arcs, secondary characters and several plot turns, you are probably moving toward synopsis territory.
At the other extreme, if cutting five more words removes the action or the detail that distinguishes the conflict, the shorter version is not necessarily the better one.
If you are preparing material for a particular school, competition, fellowship, producer or submission process, follow any format requirements they provide.
Logline, Synopsis and Tagline Are Different Tools
These terms are easy to mix up because all three describe or represent a film in compressed form. They do different jobs.
| Format | Main job |
|---|---|
| Logline | Communicates the central dramatic premise |
| Synopsis | Explains how the story develops through its major events |
| Tagline | Promotes the film with a memorable phrase |
A synopsis expands. It has room to explain what happens. A logline selects. It gives the reader the central situation needed to understand what kind of story this is. A tagline is doing something else entirely. Its job is promotional rather than explanatory.
Outlines and treatments contain considerably more story information as well. Exact requirements can vary depending on where and why the material is being requested, so it is more useful to understand the function of each document than to distinguish them solely by word count.
When Should You Write the Logline?
You can write one before the screenplay exists. Doing so may expose a premise that still lacks a clear objective or central resistance. It can also give you a simple reference point while developing the story.
You can return to it during the draft. If the screenplay has evolved, the logline may need to evolve with it. And you can write it after finishing the screenplay, which creates a different problem: you now know far more about the story than the reader needs to know first.
Writers develop stories differently, so there is little value in forcing one workflow onto every screenplay. The useful question is what you need the logline to do at that particular stage.
Before You Call It Finished
Read the sentence once without trying to polish it. What film do you actually picture?
If the answer is still something broad—“a detective hunts a killer,” “a woman confronts her past,” “an outsider fights against the odds”—find the phrase that could belong to someone else’s screenplay.
Then look for the detail in your story that changes that picture. Keep that detail. Cut what competes with it. Read the logline again.
Take Your Screenwriting Further
A strong logline is only the beginning of developing a story for the screen. If you want to build your skills in story, character, structure, drafting, rewriting, and pitching, explore Vancouver Film School’s Writing for Film, Television & Games program, where you can specialize in writing for feature films, television, or games.