The Battle City Tournament has begun. Spike Drake is a contestant who is in it to win. While he duels, he will gain more cards. However, there's trouble in town. With his Millennium Collar, he keeps in contact with his friends to make sure they're safe, and keeps tabs on rivals, and a villainous group known as the Thestrals. The Thestrals are looking for something in Canterlot, but what exactly are they looking for? Nobody knows, but they are ruthless towards people who stand in their way. Will Spike be able to stop them, or will he fall victim to their evil ways?