Following the defeat of the rogue Bakugan Naga, peace returns to Vestroia thanks to Danma Kuusou and his allies. However, tranquility is short-lived as the Vestals, humanoid aliens, swiftly conquer New Vestroia. Equipped with a formidable device that enslaves Bakugan, they seek to control these creatures as mere playthings. To thwart this threat, the Bakugan Battle Brawlers Resistance, led by Danma, must unite humans, Bakugan, and Vestals to push back the invaders and safeguard their world's future.