Rainbow Dash. She was on the weather team at age 18, the youngest member yet. She was loved by many for her dare-devilish stunts, her outgoing personality, and her acrobatic skill. One day, though, everything in her life changed and was shattered.
Vinyl Scratch. Due to being born a unicorn, and being born to pegasus parents, she was thrown out of her family and forced to grow up without parents. One day, a long-lost familiar face appears at her door.
When the two collide, everything is changed, and they enter in a gamble for fame, fortune, and friendship. If they win, they will forever be known as the greatest in Equestria. If they lose, then nopony will know them at all.