Watch Bakugan: New Vestroia Online
In the parallel world of Vestroia, a power-hungry Bakugan, a small marble magnetic sphere which when thrown on a gate card turns into a highly strong and powerful warrior named Naga decides to absorb the energy of the two opposing cores that preserve the balance and peace in Vestroia. However he absorbed too much power and energy found within the Silent Core, the source of negative energy. The Infinity Core, the source of positive energy had been absorbed by Naga's twin sister, Wavern. Bakugan Battle Brawlers: New Vestroia revolves around Dan, Marucho, and Shun being called to the newly restored Vestroia, allying with three new brawlers named Mira, Ace, and Baron against the evil Vexos organization.
Spectra makes a false appeal to the Vestals that he is the hero and is trying to stop Zenoheld from ruling all dimensions. On Vestal, Dan and the others purpose to stop whatever he is planning. Zenoheld and the Vexos realize that Spectra has stopped their ability to travel into Vestal by jamming their signals, so Zenoheld sends Shadow to earth to force Dan and the resistance to come to them. Shadow appears and frightens Alice until Chan Lee arrives and the three battle. Alice is initially hesitant to fight, as she might become Masquerade again, but eventually embraces the fearlessness of Masquerade and utterly destroys Shadow's Hades. However, Shadow then reveals his more powerful spider-like Bakugan and wins the battle in one turn.
Mira, Dan and Marucho head to Vestal to meet Klaus, Baron and Ace at Klaus' mansion. It is there Volt comes to retrieve the Subterra and Aquos energies after being humiliated by Prince Hydron. Volt and Dan are about to battle when Spectra and Gus appear out of nowhere. Gus attacks Volt psychologically by saying he stole Brontes' soul, as shown in the beginning of the episode. The Forbidden Cards were used on Elico, Brontes, and Vulcan. Volt backs away to let Spectra brawl Dan. Mira and Marucho join in the brawl to help Dan. In the brawl Dan manages to defeat Spectra using the power Drago received from Apollonir, despite Helios's upgrades. However, before Spectra leaves, he warns Dan that they will meet again.
Klaus, Baron and Ace successfully contact Dan and warn them about the Vexos, so Dan decides to head to Vestal and face the Vexos. However, when Zenoheld decides to test the BT system, Shun heads to New Vestroia with his newly evolved - and now male - Ingram, while the others head to Vestal. Once Shun arrives, he finds that all the Bakugan are missing and Ingram is still in ball form. Skyress arrives and tells him that a metal sphere came from the sky and sent a beam that trapped all the bakugan in ball form. Shun attempts to destroy the device but finds that it is protected by a force field. All of a sudden, Lync appears to take the Ventus energy and a battle ensues.
While Dan is shocked by a surprise visit from his father and Mira reminisces over Keith, Ace searches the city for a place Baron can stay. As he approaches a future building site for an apartments complex, Baron calls Ace and tells him how the Haos Energy was stolen by Hydron. Then Mylene appears and challenges Ace for the Darkus Energy. As the battle drags on Ace and Percival eventually become overwhelmed by her mechanical bakugan. Before Mylene can execute the final blow, Sirenoid appears from the lake below them, moments before Klaus, and joins Percival in battle.
To obtain the Six Elemental Attributes, King Zenoheld has the Vexos search for the Bakugan Brawlers Resistance. Baron, after talking with Ace, decides to move out due to the lack of space in his home occupied by his giant family. While taking his siblings to the park, he runs into Prince Hydron who engages him in battle. All seems well when Nemus pulls out his attribute change ability, but he proves to be no match for Hydron's Dryoid.