Pinkie Pie's 20th birthday has just passed, and she couldn't more happy to be on Earth for another year with her friends, parties were held, games were played and everyone was more ecstatic than usual for the party goddess. However, when the next day began, she began to act different, almost all traces of their party-going friend gone, replaced with someone not even her own friends and family could recognize.

She's changed her clothes, walks different, talks more conceited and forward, and started making connections and deals with powerful people. Twilight and her friends are looking to find the answer while Pinkie goes off in search of her true dream, to be the most influential person on the planet.

And she intends to make that happen by any means necessary.