Sequel here: Po-Gi-Oh Two: The Start of A Millennium

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.

But is soon forced to battle to save her sister while a group of ponies hiding in the shadows try to take over the Equestria and bring a new age of terror to ponies and creatures of all kinds.

(This story is a re-write of my story with is deleted which was called Po-Gi-Oh Season One)