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When Bakugan began emerging from the earth's crust in a mysterious worldwide "awakening," Dan and his friends find themselves at the epicenter of a new age. Dan and Company quickly learn that they must grow into more than just suburban kids looking for quick fame in the post-Bakugan era. They must learn how to work with their Bakugan and deploy them in battle in order to survive the seemingly endless forces out to control, enslave or just plain destroy the mysterious race of alien creatures. Dan and his friends will evolve into bona fide heroes by protecting their Bakugan, the Earth and ultimately the incredible secrethidden beneath our feet: Our planet has merged with another, living planet... Vestroia!
Orega Fire, the young, Oreca-loving main character. One day a mysterious treasure chest that has the power to summon monsters into this realm appears. His name is none other than Pandora. As they encounter countless battles together, the friendship between Fire and his monsters grows. However, Fire and his monsters are soon involved in a battle with the Demon King Mus who threatens the peace and harmony of the Oreca world. A never before seen Oreca Battle is about to unfold!
Drago is unable to control the powers he has received from Code Eve, so Dan and Drago contemplate retirement. Meanwhile a new and insidious enemy infiltrates Bakugan Interspace shaking the Battle Brawlers and their fans. The Battle Brawlers must find a way to control Code Eve's powers, with the help of some new allies, or else this new threat could threaten all Bakugan everywhere.