Dan Kuso, Marucho Marukura, and Shun Kazami discover that Bakugan Interspace, the virtual arena where they duel, has been hacked from another dimension, dragging them into a war between the Gundalian empire and the Neathian people. Fabia Sheen, a Neathian refugee, and Jake Vallory, a new human brawler, join the trio as the Gundalian faction called the Twelve Orders sets its sights on Earth next. This third TV season follows the group's battles as they try to stop the invasion before it reaches home.