While Starlight Glimmer is in Canterlot for a few days, a couple of ponies from Starlight's past arrive in Ponyville to entertain the locals but after seeing who lives there, they decide to cause problems instead.
After 1000 years, 52 cards created by Celestia and Luna have been unleashed and it is up to a unicorn named Twilight Sparkle to find these cards before something terrible happens. But she's not the only one looking for these cards
At the age of 20, Twilight Sparkle is still without her mark and since her brother is the captain of the royal guard, he could get Celestia to help her. Once Celestia realizes that she can't help her, she sends her to her protege who possibly can.
When Princess Celestia falls ill, she summons Starlight Glimmer to Canterlot to take over her duties for a few days. Celestia is confident in her protege's abilities but Luna has her doubts.
Starlight did it, she passed her entrance exam and was accepted as Celestia's protege. Join her during her journey through school where she makes new friends, continues to expand her knowledge and helps other ponies with their studies.
One Thousand years ago, the saints Celestia and Luna drew upon the power of the Red Stone of Aja to defeat the demon Discord. Now one thousand years later the Stone is destroyed, beginning the tale of six ponies and their quest to redeem the world.