The time to celebrate rainbows has returned, and a special pony named Rarity is being groomed to become the next unicorn princess -- a great honor, considering she will create the first rainbow of the season. Yet all work and no play can make a pony wish for a little excitement, so Rarity decides to look for some fun on her own. Hopefully she'll remembers to return home in time to start the rainbow celebration. Players visit Ponyville, Breezie Blossom, and other magical locations as they learn lessons about friendship, responsibility, and growing up.