After Hammer Gorem destroys the wall created by Tricloid, the wall seems to be missing in the initial Japanese airing.The title is a parody from "Race to Witch Mountain.".The Brawlers defeat Rabeeder and Tricloid in a race, with Dan heading to the Pyrus/Darkus world alone.The Brawlers, minus Marucho and Shun, enter a Haos/Subterra hybrid world and meet its inhabitants, sisters Tricloid and Rabeeder.Dan continues onto the next merged world with only Drago by his side.
The race is more difficult than expected and the girls have to stay behind to slow the hybrids down. Rabeeder and Tricloid challenge them to a race to the gate to the Pyrus/ Darkus world. But arrives to find that Shuji (Akira's older brother) is Dan's challenger. They are greeted by Rabeeder and Tricloid, two of Naga's lackeys, the Earth and Light world Gatekeepers. One day Dan prepares for a brawl against Akira at the park. As Naga is seeking the Infinity Core so that he may complete the Perfect Core in order to gain control of Vestroia, Earth, and all other worlds, time is of the essence in this devastating war of worlds.Dan, Julie and Runo land in the Subterra/ Haos world. Danma and his friends must team up with individuals from other worlds who have also been drawn into this epic battle. Now, his presence within the core has destabilized Vestroia and attempts to merge with Earth as well as many other worlds. When the evil Bakugan Naga attempted to take this great power for himself, he was unable to absorb the negative energy he wished to steal and found himself trapped in the Silent Core. This realm is balanced by the Perfect Core, which itself is formed by the Infinity and Silent Cores. Dan makes an open challenge to Masquerade, and loses two of his Bakugan to this mysterious player, thanks to a Doom Card, which makes a Bakugan disappear forever. Vestroia has recently come under attack by creatures known as the Doom Beings. A mysterious Bakugan player named Masquerade, who is ranked at 1 on the list of Bakugan players, is stealing Bakugan from players worldwide.
Giving Dan his very own gauntlet, Mira teams up with him to battle two evil Vexos members, Volt and Lync. Once there, they meet a Vestal named Mira, a teenage girl whos the leader of the Bakugan Battle Brawlers Resistance. Hailed worldwide as heroes after taking down Tiko, the Awesome Brawlers are living the good life until a powerful new enemy surfaces. Their game accidently sucks them into an alternate dimension called Vestroia, the home ground of Bakugan. Leaving Runo and Julie behind, Marucho follows Dan and Drago to New Vestroia to battle the Vestals. Dan Kouzo and his crew of heroic brawlers battle both challengers and powerful, evil forces as they work to protect humans and the Bakugan. But unknown to these young friends, Bakugan is much more than a simple past time. Together with their other friends, they form a team called the "Bakugan Battle Brawlers" in order to play this new game together. Bakugan Battle Brawlers begins with Danma Kuusou, a boy who invented the game Bakugan with his friend Shun Kazami after mysterious and seemingly random cards fell out of the sky.