In the year 2055, four years post the Danball Senki W incidents, LBXs have surged in popularity to become a global hobby. Professional leagues have emerged, enabling individuals to sustain themselves as LBX players. Arata, a 14-year-old newcomer, enrolls at Kamui Daimon Integrated Academy situated on Kamui Island, renowned for nurturing top-tier LBX players and mechanics. To gain admission, one must triumph in a minimum of three sanctioned tournaments. Amidst his platoon comrades, Arata encounters adversaries and uncovers the academy's hidden enigmas.