An evil Bakugan called Naga was tempted and decided to take the Silent Core. It is the story of a dimension called Vestroia which loses its natural balance and merges with the Earth and many other alien planets.
Together with his friends Runo, Marucho, Julie, Shun, and Alice, the group Bakugan Battle Brawlers is formed and its members are accidentally dragged into fighting for the fate of Vestroia (the Bakugan's home dimension) against the Doom Beings. Dan Kuso's life changed one day when random cards fell out of the sky, where he and his friend Shun Kazami invented a game with called Bakugan.
