But without a working Dimensional Transport system or the coordinates to the Mother Palace, it at first seems there would be no way out for the brawlers. Maron bids farewell and thanks everyone for the great day and departs. Spectra brings out his Battle Gear for Helios and easily takes down Hydron, prompting Zenoheld to enter battle. Back on Earth, Mira and Baron hang out at Dan's, who after waking up from a dream, is still eager to return to New Vestroia in order to help Shun and Marucho. However, after Helios has volunteered to become a cyborg bakugan after Prof. Drago is no match for this power and loses, with Spectra claiming him as his prize. Meanwhile, King Zenoheld changes his plan to destroy any living thing that stands in his way.
However, Keith's mind lingers elsewhere, something that Mira notices but Keith brushes off. While taking his siblings to the park, he runs into Prince Hydron who engages him in battle. Many Bakugan are sent to Marucho's house on Earth including the Resistance's. Apollonir is disappointed that Dan has given up so easily and suggests that Drago is also upset at himself for losing the battle and letting Dan down. But after Lync and Volt were defeated, Spectra Phantom sends out Mylene Pharoah and Shadow Prove to ensure that the Resistance is taken care of. Mylene states that she's tired of losing to this hooded person and offers him to join the Vexos, but he leaves without saying a word and Mylene departs.
Just as he believes Runo is about to run to him, she scoops up Tigrerra, reunited with her Bakugan as well. Mira wants to know if Spectra is her brother Keith so she decides to brawl against him. As the battle wages on, Baron is defeated defending Drago, who taps into the power of the Perfect Core, defeating Mylene and Shadow easily as well as destroying the dimension controller. When Runo lies that she never really wanted to go to New Vestroia and lashes out at Dan telling him to never come back he grabs her hands and says how he's sorry she's not coming and they gaze into each other's eyes until the machine is ready he slowly lets her hands go. Ace begins struggling to defeat Mylene and her new attribute changing bakugan, Elico.
Unfortunately, Farbros is completely destroyed in the process. Clay transports them to the arena. Most of the episodes originally premiered in North America on Teletoon except for episodes 27 through 29, 33 through 35, and episode 43, which premiered on the Cartoon Network. The newly freed bakugan rise up from the ground and everyone in the stadium learn the truth about the bakugan. Spectra then orders Mira and Gus to use the bakugan to battle Dan and Ace to collect data on Drago and Percival.
Gus immediately informs Spectra that the others left New Vestroia to blame the occupation's failure entirely on Spectra's betrayal. However, before Spectra leaves, he warns Dan that they will meet again. After finishing cooking, Alice heads to find her grandfather and sees the results of Lync's battle with Hydron as well and finds his glove with the memory card. Spectra and Gus leave to confront Zenoheld and Spectra tells him to leave the brawlers be. At the lab, Mira witnesses the birth of the first cybernetic Bakugan: Ventus Altair. Meanwhile, Mira, Marucho and Shun try to activate a machine to reverse the process of Preyas, Gorem, Tigrerra, Hydranoid and Skyress's petrification but are unable to determine the numeric code.
Clay at first refuses saying that it would be treason, when Shadow reminds him he works for the Vexos now. Despite Mira's attempts to change Mylene and Shadow's mind, a battle quickly follows between the four. But then Apollonir and the rest of the legendary soldiers appear and grant Drago freedom to live wherever he pleases, with the ability to go back and forth between the worlds as he wishes. Baron, after talking with Ace, decides to move out due to the lack of space in his home occupied by his giant family. To make matters worse, Spectra, Gus and Lync follow her through the portal as do Dan, Mira and Baron.
As the others race to find Dan, he and Mira battle Hydron with the Pyrus attribute energy at stake, while Spectra presents a proposition to Dr. In order to evade the Vexos, everyone stays at Marucho's house equipped with a shield to hide the attribute energies' signal. An alien race called the Vestals led by their King Zenoheld invade and colonize New Vestroia, turning the Bakugan back into ball form and making them their slaves for amusement, not knowing that Bakugan are intelligent creatures. After meeting up with Sirenoid, his foundation continues to fund the scientist's research as well as managing timeshare on Vestal. Once again, Spectra does not care. In the first round Dan takes a major loss, but manages to strike back with Pyrus Scorpion. The series started airing on in the United Kingdom on January 4, 2010.
That night, Spectra invites Mira to dinner where he asks her to join him because he needs her and cannot accomplish his goal without her. Michael used the technology in Lync's Gauntlet to repair the machine and only those with Gauntlets can go through, meaning that Runo, Julie and Alice must stay behind. Meanwhile, Julie begins showing signs of interest in Ace after spying on him and Dan working out. Clay to construct the Bakugan Termination System, a machine that when used, kills all Bakugan in a predetermined radius. As Spectra makes his way to Earth, Dan and Drago admit how similar they are in both brawling abilities and lifestyles. Spectra takes Mira to see a team of special mechanical bakugan that he and Dr.
With Dan down, Runo rushes to help him but he urges her to go to the gate. Just then, a girl named Mira, part of the Bakugan Brawlers Resistance, a group who knows the truth about Bakugan and fights to free them, arrives and tells Dan of the new brawling style required for Bakugan battles. As the battle drags on Ace and Midnight Percival eventually become overwhelmed by her mechanical bakugan. All of a sudden, Lync appears to take the Ventus energy and a battle ensues. The Resistance is planning to attack Alpha City, but Mira wants to take a short detour to find her brother.