For writers who need something to write
Random Plot Generator: Five Plots by Genre
Tap a genre for five complete plots, each with a hook, a turn and an ending, then have River write your favorite as a story.
Free to start. No card needed.
How to turn a random plot into a story worth writing
A random plot generator hands you a premise in seconds, but a premise is only a situation. In Aspects of the Novel (1927), E.M. Forster showed that cause is what turns a story into a plot. "The king died and then the queen died" is a story; "The king died, and then the queen died of grief" is a plot1. Test each idea for four links: someone who wants something, a force in their way, a turn that forces a new plan, and an ending that settles it.
Then choose. Generate several, sleep on them, and keep the plot you're still turning over the next morning, as long as you can say its ending in a sentence. In 1846, Edgar Allan Poe wrote that "every plot, worth the name, must be elaborated to its dénouement before any thing be attempted with the pen."2 Only with the ending in view, he argued, does each incident feel like a consequence. Let a coincidence start the trouble but not end it, and don't make anyone act foolishly to keep it going.
Size the plot before you start: one turn and a small cast fit a short story, several reversals a novel. The Science Fiction & Fantasy Writers Association's Nebula Awards put numbers on those lengths. By their rules, a short story runs under 7,500 words, a novelette under 17,500, a novella under 40,000 and a novel 40,000 or more3. Keep the ending your genre promises, such as a hopeful one in romance. Then swap generic details for ones you know, like a job you've done or a street you can walk in your head.
How it works
What should a plot generator give you?
A plot generator should give you plots you could start writing today, not parts to assemble. Some generators hand you two characters, a setting, a situation and a theme, and leave the connecting to you. Tap a genre here and River writes five complete plots into a doc in your free workspace. Each has a title, trope tags and a hook under 30 words, then who wants what, what's in the way, the turn, the ending and its best length.
The five are built to differ in hero, setting, trope and kind of ending. Each keeps its genre's promise: romance ends hopeful, a mystery names who did it and why, horror may end dark, and adding "cozy" keeps violence off the page. Outside romance and cozy, at least one of the five ends bittersweet or open. River also skips stock moves such as chosen-one prophecies, amnesia openings and dream reveals, unless you ask for them.
Add a place, an era or notes on your own characters to steer the batch. Your characters appear in all five plots as five different takes, with every name and fact kept. If a detail pulls against the genre, the detail wins and the tag line names the blend. When a plot grabs you, the book outline generator can stretch it into chapters and the character generator can give your hero a backstory. If you already have a premise, the AI story generator starts from it.
How it works
From one tap to your next story
Tap a genre
Pick Romance, Fantasy, Mystery, Thriller, Sci-fi or Horror, or Surprise me. Details to include are optional.
River plots five
It invents five fresh plots, all different, and works in any details you added.
Read all five
They land in a doc, each under 120 words, with its turn and ending spelled out.
Pick your favorite
Tap "Write one as a story" for a complete short story, ask for five more, or edit any line.
- Fantasy · questThe Last Honest MapA disgraced cartographer must redraw the map the flood-god obeys. Turn: her own village was erased from it on purpose. Ends: she draws herself into the river's path, and the god hesitates.
- Fantasy · court intrigueSalt for the QueenThe royal taster can taste lies. Turn: the queen she protects is the liar. Ends: she swallows the truth in front of the whole court, and they finally have to listen.
What you'll get
Five finished plots for your genre, endings included
- Five complete plots for the genre you tap
- A hook, a turn and an ending for every plot
- A quick way to turn your favorite into a full story
Before and after
One tap in. Five plots out, endings included.
Thriller, plus a detail to include: a ferry
3. Last Crossing Ticking clock · presumed dead · one night The hook: A ferry engineer has 90 minutes to find who rigged the car deck before the boat docks in a town that thinks she's dead. Who wants what: Noor wants to stay invisible. What's in the way: Saving the passengers means being seen. The turn: The bomber isn't on board. He's waiting at the dock for her. How it ends: She brings the ferry in, walks off with the passengers, and lets him see her face. Best as: novella
Every plot states its ending, so you know where the story goes.
What lands in your doc
What lands in your doc
- Five numbered plots for the genre you tapped, or five different genres if you tap Surprise me
- A title and a tag line of trope words, such as enemies to lovers or locked room
- A one-sentence hook under 30 words, then who wants what and what stands in their way
- The turn that changes the plan, and an ending stated plainly, so you know where it goes
- A note on whether each plot suits a short story, a novella or a novel
- Your details worked into at least three plots, and your own characters into all five
Questions authors ask
Common questions
What is a plot generator?
A plot generator, sometimes called a story idea generator, suggests plots for your next story. Some shuffle random pieces for you to connect, while others draft whole plots. River's version gives you five complete plots for the genre you tap. Each has a hook, a turning point and a stated ending, so you can judge which one you'd want to write.
How do I generate a plot with River?
Tap a genre in the box at the top of this page, add anything you want included, and press "Give me five plots." Once you've made your free account, River writes five complete plots into a doc in your River workspace. Read them, edit any line, ask for five more, or tap "Write one as a story" to turn your favorite into a complete short story.
Are the plots random?
Not in the dice-roll sense. River invents them fresh each time instead of pulling from a list or filling blanks in a template, so the same genre gives you new plots on every try. Tap Surprise me for five plots across five genres. To steer them, type anything you want included, from a setting to your own cast of characters.
What if none of the five grab me?
Ask for five more, or say what you liked, such as "more like plot 2 but darker," and River builds the next batch around it. You can also try another genre, or add a detail that matters to you so the plots start closer to home. Have a story that needs a jolt instead? The plot twist generator works from a setup you paste.
Can River write the plot as a story?
Yes. Tap "Write one as a story" and tell River which number you like. It writes that plot as a complete short story in a new doc and leaves your five plots as they were. Ask it to "outline plot 3 as a novel" and the outline gets its own doc too. To shape the story yourself first, the Save the Cat beat sheet lays out 15 beats.
Can I publish a book based on one of these plots?
Yes. In the US, copyright doesn't protect ideas4, only the way they're expressed, so a plot idea is free to build on and the words you write are yours. Amazon's Kindle Direct Publishing treats AI used only for brainstorming as AI-assisted, which needs no disclosure5. If River writes the story text, Amazon counts it as AI-generated, even after heavy edits, and you must tell Amazon when you publish.
Is the plot generator free?
Yes, it is free to start, and you don't need a card. Your five plots open in a River workspace, where you can edit them, share them or ask River to change them. Paid plans add more AI use and access to the most advanced models.
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