Bakugan Battle Brawlers: The Lost Brawler

The story follows the Brawlers as they face their most dangerous enemy, Naga, who seeks to conquer Earth and Vestroia by taking control of the Infinity Core, guarded by Wavern. After their friend and leader Dan is exiled to the Doom Dimension in a battle against Masquerade, the group faces immense grief and guilt. The stakes rise as they learn of Naga's growing power, his army of corrupted Bakugan, and his dark influence over humans like Masquerade and Alice, who struggle to redeem herself after serving as a vessel for Naga's plans.

With the clock ticking, Bright, a new brawler partnered with the enigmatic Bakugan Leonidas, steps up as a leader. He proposes a dangerous mission to the Doom Dimension to rescue Dan while leaving Earth vulnerable to Naga's potential invasion. The group must balance their hope for saving Dan with the risk of leaving Wavern and the Infinity Core unprotected. Along the way, they confront their fears, strengthen their bonds, and prepare for the ultimate battle against Naga and his forces.

The story progresses with intense battles, emotional revelations, and the ever-present threat of Naga's return, leading to a climactic showdown for the fate of Earth and Vestroia.