Several years ago, three mysterious unicorns, prepared for what would possibly be their final battle, left their foal trainee, Keldeo, in the care of Princess Celestia. Now, he is grown up, skilled in magic (including a mysterious ability unique to him), and one of the only friends of Princess Celestia's protege, Twilight Sparkle. But when Twilight and Keldeo are sent to the village of Ponyville to oversee the Summer Sun Celebration, neither have any idea that a great destiny waits for both of them...
This takes place from the beginning of the show to the end of season 3. Also,expect me to take some liberties with the dialogue and little parts of the story.