Since ancient times, the sport of B-Daman has been a central part of life on B-Daworld. Few have what it takes to be a B-Daplayer, and of that few only one can be B-Dachampion. But Yamato Delgado, wielding Cobalt Blade, the most powerful of all B-Daman, has that ability. Along with Gray, Bull and Terry of the B-Daman team, he will battle the evil forces of the Shadow Alliance in and out of tournament play to become champion and save B-Daworld.