So, I start the story with a chunk of story, any length I want.
This does not mean you get to decide when this story ends
Once upon a time, in a land far, far away on some random planet outside of our solar system, there was a monkey. She was not an ordinary monkey, though, because this monkey had purple fur and she also had telekenisis. So, one day she was moving a piece of fruit with her mind when...
And you add on to it from there.
Bring in the randomness!!