it has to go something like this (I'm going to use my imagination, rather than ruining it by actually reading it):
1. The ponies are in trouble
2. The justice league is hanging out at headquarters, etc.
3. members of the JL have a gay orgy.
4. Members of JL find out that ponies are in trouble. They debate whether to help them. Is it the JL's mission to help a group of superintelligent ponies?
5. they plan out how they will save the ponies
6. they travel to the home of the Ponies
7. They meet the ponies, tour their homes, and the problem is explained. The enemies will be incredibly obvious and cliche'd, but the JL'ers and ponies will be stumped as to how to beat them.
8. two "main" characters, one a pony and, let's say... Batman..., begin fighting. They are both headstrong and reckless. Will they ever learn to work together?
9. One of the young ponies has some kind of personal problem. Most likely: his father does not respect what he is doing.
10. A JL member (let's say superman) helps this young pony. There is journey to the father, and then an emotional fight. The JL member then goes in and talks to the father-- he immediately comes to his senses, and declares that he loves his son and is proud of him.
11. The enemies attack. there is a battle where it turns out that the ponies have magical powers. The Pony hero saves the life of Batman.
12. Batman and Pony hero have gay sex, after a long, overly-emotional conversation.
13. The JL and Ponies plan how to beat the enemies-- they just barely fended them off the first time. They are stumped.
14. A young, inexperienced member of the JL thinks of a way to beat the enemy! However, Batman will not listen to him-- he is "just a kid"
15. The pony hero convinces batman to listen to the kid. probably more slash here.
16. The ponies and JL'ers get ready for battle. They prepare the trick that will allow them to defeat the enemies. This trick is not revealed, yet.
17. One pony begs another not to go-- it's too dangerous! I love you! Steamy, badly written, and repetitive sex scene.
18. The JL'ers and Ponies travel to the enemy. They attack. The final trick is revealed-- once again, this is something incredibly obvious and overused.
19. The trick somehow fails. Is all lost? Suddenly, TheInevitable appears out of the shadows. He is a half fox/half unicorn, and he has the solution-- another highly cliched idea. There is a long and drawn out fight scene, with endless near-losses, only for TheInevitable to suddenly effortlessly win.
20. A huge celebration! TheInevitable is invited to be a member of the Justice league. he has a threesome with batman and superman, and then he is officially initiated in a bizarre ceremony. Everyone loves him.
Anyway... didn't mean to steal anyone's idea. I just thought it'd be interesting to try to come up with 30 chapters worth of stuff.
I'm sorry if this comes across as me trying to one-up anyone. This is meant in a spirit of giving.
edit: Oh my GOD, it's even better than I imagined. The first chapter is about two made-up superheroes getting in trouble with the justice league for stealing oreos.
Also: the reason there are so many chapters is that they're each... maybe a page.