Hoop

A pink pony with a blue and purple mane looks at a picture of a pink pony and a dark-haired pony in a library, then the scene cuts to a close-up of the dark-haired pony and the pink pony standing side-by-side, followed by a depiction of the dark-haired pony holding the pink pony in a hug, and finally the dark-haired pony walking with the pink pony clinging to her back.