Hi! I would like to ask what the prompter usually means when they say they want an au! of a movie or a book:

Do they usually mean follow the exact plot and the character or can we have our own little spin-off but still do the main key events in the story?

I hope it's not too confusing! I'm already starting on a prompt~ They're all so tempting hahahah ^.^v

Thank you very much! heheheh~