Angered by his defeat in Vestroia, King Zenoheld has commissioned Dr. Clay to construct the Bakugan Termination System, a machine that when used, kills all Bakugan in a predetermined radius. However, the six attributes are needed to activate it. Meanwhile, Mira returns to Earth to pay Dan, Marucho, Runo, Julie and Shun a visit. King Zenoheld then challenges the six ancient warriors to a battle for their attribute energy. At first the six ancient warriors are doing great until Zenoheld combines his Mechanical Bakugan and easily overpowers the warriors. In a last ditch attempt, the ancient warriors vanish and summons Drago, Elfin, Ingram, Wilda, Nemus and Percival and their partners to give the six bakugan their attribute powers, causing them to evolve. Dan, Marucho, Shun and Mira wake up to find their Bakugan have truly evolved, and realize that New Vestroia is in danger.