Expert Turbo-Duelist Sunset Shimmer, is about to enroll in the Canterlot Duelist Academy, meeting a lot of old and new faces as she progresses. Time for Sunset to bring her A-Game.
Magic starts leaking out from the portal between the human and the ponies, at the same time zombies, dragons, fiends and more monsters appear out of nowhere attacking people. All appears to be connected to one thing, Duel Monsters.
This for the Friendship Games, the teachers decide to have a tournament for the popular dueling game, Yugioh. Also, the Twilight from this world wants to learn about the magic coming from the school and unintentionally ends up stealing it.
Twilight's visit to the human world goes insane as Pinkie's new friend Bakura sends them to the Shadow Realm in order to steal Twilight's rainbow power. Sunset is their only hope, can she handle it all on her own?
Sweetie Belle; a young unicorn filly who doesn't really care about the new card game in Equestria. Duel Monsters, unlike her friends Scootaloo and Apple Bloom who want her to join in the fun.
In an alternate reality in which dueling is Earth's greatest pastime, one duelist receives a mysterious card that unlocks his destiny that will lead him to becoming the savior of two worlds...
When Sunset Shimmer steals Twilight's crown she ventures into a new world with humans who play card games. She then meets Yugi Moto and his friends. In order to win her crown back she must beat the best of best including Sunset Shimmer.