Rarity desperately needs "a little something" for her super secret project. Pinkie Pie really needs to stock up on Gummies bizarre food. They both need these things from the Everfree forest, so they decide to go together. However something goes horribly wrong... They both realise that they have switched bodies, and so a hilarious adventure ensues as they try to live each others lives whilst trying to find a way to reverse what happened in the forest...