Not long after Dan & the Battle Brawlers saved the world from the evil Nomad Mechtogan Faction, a new breed of Bakugan have appeared around the world. These Bakugan have amazing techniques & they're referred to as Tech Bakugan. Those who use Tech Bakugan are known as Tech Brawlers. Right now, two brawlers, Harley & Raichi, both race to become the greatest Tech Brawlers of all time!