100 years after the passing of her friends, and more recently Princess Celestia, Twilight Sparkle the Princess of Friendship has all but given up on Friendship, not wanting to feel the pain of losing someone close to her again.

Princess Twilight and newcomer Ashura Origans is informed by Celestia that the citizens of Equestria have been turned into cards of the new card game duel monster's by an evil unicorn who aims on turning everyone on the planet into cards.

Follow the adventures of the Mane six, along with Sonic and his friends as they live through their daily lives in ponyville with the occasional adventure through different location's across Equestria.

King Sonic and the knights of the round table have been busy dealing with the last of the Knights of the underworld. But when one of Sonic's friends is taken, and the princesses almost assassinated, Sonic must deal with an impossible choice.

Ashton found his old Yu-Gi-Oh cards and deck and decided to teach the game to Sonic and the mane six, but something goes wrong and an old enemy returns with an ancient Egyptian artifact and transforms Sonic as well as five of the mane six into Cards!

Sonic has a terrible accident and is now bound to a wheel chair and also is also in the care of Rainbow Dash. Can Rainbow look after Sonic while he recovers? Will he recover at all? And will he be the same afterwards?