Dan Kuso's life changed one day when random cards fell out of the sky, where he and his friend shun invented a game called Bakugan. Together with his friends Runo, Marucho, Shun, Julie, 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. In the dimension of Vestroia which loses its balance and merges with earth and many other alien planets. An evil Bakugan called Naga was tempted and decided to take the Silent Core. So Dan and his friends decide to bring back balance by meeting new friends and allies in the other planets, learn more about the origin of the Bakugan; and facing Naga, who seeks to complete the Perfect Core.
