Rainbow Dash reveals the little-known fact that pegasi can survive in outer space, and Pinkie Pie dares her to take her to the moon, so that she can party with the moon ponies. Space is full of dangers beyond a simple lack of air, but with a little help from her friends, Pinkie Pie just might win past them all and prove that ponies can party whereever they please. Even if the moon is full of weasels.