The Brawlers head to Vestroia where they attempt to save the universe from destruction at the hands of Naga but are they too late? Earth is already in chaos as a result of the actions of Naga's Bakugan henchmen. The Brawlers are in trouble and Naga is free to wreak havoc and chase the Infinity Core which he can use to create the Perfect Core and give him ultimate power. To save the universe, there's only one option: brawl!