A few months later, Bakugan City is shown to have a peaceful start as humans have now communed with the Bakugan from New Vestroia. Not all is well when 4 Mechtogan led by Coredegon, who have broken free from their Bakugan, start terrorizing the place. Not only that, but some new enemy called Wiseman has appeared with ancient Bakugan called the Nonets. At the beginning, The Brawlers get confused because Wiseman somehow had the appearance of Gunz Lazar, the new Haos Brawler who disappeared after the four Mechtogan attacked Bakugan City. But it was later revealed that Wiseman was actually Coredegon in disguise while the real Gunz was put in a coma so his negative energy was absorbed. After Coredegon alongside his pals (in his combined form as a Mechtogan Destroyer) sent the Brawlers to the Doom Dimension, he completely destroyed the Earth and New Vestroia. With Gunz back to his normal state, Dan and the others travel through time in order to stop Mechtavius Destroyer from killing every human and Bakugan. In the final battle, Dragonoid Destroyer, who is Drago's last Mechtogan, acquires an infinite power that comes from the bond between Bakugan and humans all over the world, which gave them a chance to defeat the Nonet Mechtogan and send them back between dimensions. Dan's friends throw him a party, but soon discover Dan is missing. Shun sees Dan and Drago sailing off using a boat borrowed from Kato. Dan says that another adventure is waiting for him and Drago, and that he had enough time in the spotlight, such that he wants to let other Brawlers to rise to his rank.