Had a fun little idea today while drafting a story and seeing fun raffles, what if instead of a raffle, I give out a puzzle of sorts? Always liked fun little brain teasers! First person to solve the puzzle get a free story of any kind, the format for the request to be filled out will be the following:

Character ref: (up to 4)
Story concept: (Small outline, theme, or topic, it can be NSFW)
Any details or extra sides: ____

If there are any details or issues either in the making of it or something bothers me, we will work it out :)

Now, the puzzle:

A _ _ - _ O _ _ - T _ _ _ _ _ - _ _ - _ _ - _ _ _ _ _ - _ _ _ - _ _ _ _
1 2 2 3 4 4 5 6 7 8 9 3 10 4 6 4 6 6 7 4 10 12 11 7 4 11 1 8 6

Middle dashes are spaces : -
Underlines are letters: _
Comment your answers below, I'll slowly drop more hints once I see a few guesses to make sure people are on the right track! (If there are mistakes, I do apologize, first time doing this soooooo trial by fire XD
Good luck!