OMG! I got the coolest idea for a story when I flicked off my light so I'll write it tomorrow morning.
Ok it's tomorrow and I woke up late so I'll try and write this fast before I go to work.
It's set a year after Aang took Ozai's bending away
Chapter 1
"Hey Toph look at this poster." Aang said excitedly pointing at a poster on a wall.
"Uh… Twinkle Toes?"
"Yeah?"
"I'm blind."
Aang smacked himself on the forehead and started reading the poster to her.
"It says: World Bending Tournament. The best fighters from the 3 elements pitted against each other to see who can win the prize money."
"3 elements?" He said sadly. "I'm going to enter that tournament as an airbender." He said determinedly. "Well I guess that mean's I'll have to enter as an Earth bender so air doesn't win." She said challengingly. Aang ripped the flyer off the wall and ran all the way back to camp dragging Toph along the way.
"Katara! Katara! Look at this poster!"
She took the poster and started reading it. "World bending tournament. Sound's fun. Ages 18 and up or 13 and up with parents consent."
She looked over at Toph who was looked dejected.
"You don't think I could pass as an 18 year old do you?"
Katara looked at the short earthbending master. "Nope."
"Well then you will just have to pretend to be my mom." She said brightly.
"Whoa hold on a second there. How am I supposed to be your mom if I'm entering myself?"
"Woohoo! Aang yelled I'll see you in the final round Katara!"
"Well Sokka can pretend to be my dad I guess."
"Sokka can do what?" He said as he walked back into camp with firewood.
"Pretend to be my dad so I can enter this bending tournament."
"Well… Alright." He said a little downcast.
"What's wrong Sokka?" Aang said noticing the water tribes warrior downcast attitude.
"It's nothing…"
"Alright it's settled then!" Aang said happily we get to Ba Sing Se by…" He grabbed the flyer "3 DAYS FROM NOW?" He jumped on Appa everyone on Appa we gotta get moving if we're going to make it in time!"
"Aang I don't know if we can make it in three days…" Sokka said unhappily looking at Aang airbending all their stuff onto Appa.
"Nonsense!" He said and proceeded to airbend Toph Katara and Sokka onto Appa.
"Yip Yip!"