My Little Pony: The Runaway Rainbow (2006)

The Rainbow Celebration is almost near as everyone in Ponyville prepares and awaits the first rainbow of the season. Meanwhile at the magical city of Unicornia, Cheerilee is teaching a young unicorn pony named Rarity about being a Rainbow Princess and her duties to make the First Rainbow of the Season using the magic wand. Rarity is still young and she accidentally uses the wand, which in turn teleports her into the middle of Breezie Blossom. Cheerilee, Brights Brightly and Whistle Wishes venture outside Unicornia in search of her. Rarity befriends the Breezies and they visit Ponyville and later Rarity feels homesick. Pinkie Pie, Minty, Rainbow Dash, Spike and the Breezies help her get home, just in time for the first rainbow of the season.