AI Story Writer: You Decide, It Drafts

Quick answer: An AI story writer drafts and you decide. In SceneMixer the decisions that make a story yours happen at three moments: in the brief, where you set the genre, the lead, the conflict, the ending and the tone; after the draft, where you write again, edit the script yourself or have the site continue it; and after the reading, where every character description and every shot is text you can rewrite by hand for nothing, or by instruction for 1 credit a revision. Below is who decides what, where each change is made and what it costs.
Still from “The Last Envelope”, an AI short drama generated end-to-end by SceneMixer (6 characters, 1 episode)
Sample: “The Last Envelope” — Digital HD, 1 episode, produced end-to-end by SceneMixer from the script · watch the episodes

Who decides what

DecisionYouThe writerWhere
Genre, lead, conflict, ending, toneState them in the briefDrafts to themAI Create box
How much storyPick Mini, Brief, Short, Medium or LongWrites to that length; options too long to read afterwards are not offeredLength menu
How many episodesSay it in the briefSplits the script by story, not by clockBrief, then the read
Language of the scriptSwitch the interface language firstWrites in itLanguage button or Settings
Language the cast speaksChoose the dialogue languageDoes not follow the script language automaticallyStep 1
Names, beats, dialogue wordingSteer with the brief, rewrite afterInvents what it needsScript, then storyboard
What a character looks likeEdit the description, regenerate the pictureWrites a first descriptionStep 2
The wording of one shotEdit by hand, or say what to changeRevises under your instructionStoryboard card
What happens after the last episodeGive a line of direction, or noneDrafts the next episodes from where the story standsStep 3, Add an episode

The two language rows trip people up: a Korean script does not by itself give Korean speech in the video, so pick the dialogue language in Step 1 as well. Writing the script in your language.

The first draft: how to steer it

Put five things in one or two sentences: the genre, the lead and what they want, the conflict, the ending you want, and the tone. The genre sets the rhythm and the kind of hook each episode ends on; the ending, even one word, keeps the episodes pointed somewhere. Inspire Me fills the box with an example you can change.

Leave out camera directions, shot lists and character sheets, which come later; long backstory, which the writer will invent as needed; several stories at once; and real people or brands. Writing the one-line brief has before-and-after briefs.

If the draft is off, write again with a sharper brief. Each writing is charged on its own when it is delivered, a writing that fails is not charged, and every draft stays in Writing History, where any of them can be started later. The window itself does not edit the text: copy it, change it anywhere and paste it into Upload Script, or take it into the project and make small changes after the reading, where they are free. After the script is written.

The second pass: rewrite by hand, or by saying what you want

The writer’s jobDo it byWhy
Fix one word, a number of seconds, a nameHand (free)It is faster than describing it, and exact
Make a whole segment colder, or quieterInstructionThe change touches many lines; one sentence covers it
Take a character out of three shotsInstructionTedious by hand; the revision rewrites the shots without them
Add a voice-over line in the right place and formatInstructione.g. “in shot 1, add a voice-over in Mara’s voice”
Add, drop or retime a shotEitherAsk in the same box; the review shows the old and new shot count and total seconds
Put in a character chip from the projectHand, with the @ menuInstructions only use characters already in the project

By instruction means AI edit on a segment’s card: write what to change in up to 500 characters, press Revise, and read the review, with removed text struck through and new text highlighted. Nothing is saved until you press Save. A revision that comes back costs 1 credit; one that fails, is refused or changes nothing costs nothing, and the result is checked before you see it: one that fails the checks (names that are not in the project, a different language, broken shot numbers) is dropped at no charge. There are eight starters to finish: change a line, an action, the mood, the time and weather, the camera, remove someone, add a voice-over, change the location. The eight starters, with examples · AI edit or edit by hand.

The safety net: text history

Writers rewrite and regret. The storyboard text keeps History: the original, which is never overwritten, plus the text from before each of your last five changes, labelled Before an AI edit, Before a manual edit or Before a restore. View shows where it differs; Restore puts it back, and the current text goes into the history in turn, so even a restore can be undone. It is free. What wipes it is regenerating that episode’s storyboard, which rebuilds the segments from scratch, or deleting the segment; copy anything you want first. Text history.

Carrying the voice into later episodes

When the script ends and the story does not, Add an episode at the bottom of Step 3 offers Let AI continue. Give it a sentence of direction, or none, and choose how many episodes. It picks up after the last episode with the same cast, in the same language and format as your script. The draft is priced like AI Create, by the length it writes. You read it, change anything, and only then add it; nothing is read or charged for the reading until you do. Making the next episode.

What the writer will not do

It will not change how a character looks by editing the story: the face, hair, build and outfit come from the character’s picture, so change that. Voices are chosen on the character, music has its own switch, and the spoken language is a project setting, none of which an edit to the text moves. Real people’s likenesses and famous characters are caught by the IP check when pictures and clips are made. And an instruction cannot bring in a character or a place that is not already in the project; add it to the cast first. AI story generator shows what the finished draft turns into, and AI story shows what makes a draft filmable.

FAQ

What does an AI story writer do?

It drafts a script from a short brief. Here you then read and rewrite it, and the script goes on to become a cast, a storyboard and video.

What should my brief include?

The genre, the lead and what they want, the conflict, the ending you want and the tone, in one or two sentences.

Can I edit what it wrote?

Not in the writing window. Write again with a sharper brief, or edit the text elsewhere and paste it. After the reading, everything is editable: by hand for free, or by instruction for 1 credit a revision.

What if I do not like the draft?

Write again. Each draft is charged on its own, failures are not charged, and every draft stays in Writing History.

Can I change the ending afterwards?

Yes. Edit the last shots by hand or by instruction, and regenerate the segments to see it on video. Earlier text is kept in history.

Which language does it write in?

The language your interface is in when you press Start Writing. The cast’s spoken language is a separate choice in Step 1.

Can it keep writing after the script ends?

Yes. Let AI continue drafts the next episodes with the same cast; you read and edit the draft before it is added.

Can I undo a rewrite?

Yes. History keeps the original and the text before your last five changes, and restoring is free.

Write the brief, then take over the pen

The draft is quick; the rewriting is yours, and it is text.

Write a story

Updated November 2, 2026