It's Flurry Heart's seventh birthday, and her parents have told her she can have anything she asks for (so long as she eats all of her crystal veggies, which she did). They expected something extravagant, but obvious - a fancy dress, a room full of candy, maybe even her own little throne between theirs. What they did not expect was the one thing she wants more than anything for her special day. Princess Flurry Heart... wants a pony of her very own.

[EDIT]: Wow, on the front page in less than a day! This is amazing!

Pinkie has a box made out of glass.
It's perfectly ordinary in every way.
Rainbow Dash says it's empty. Pinkie says it's not.
There's only one way to settle a friendship problem like this: Gambling.