 Raised by cats until he was five, Yamato Delgato s only dream was to play B Daman-the official sport of the B DaWorld. However, his dream comes true when he s chosen to wield the most powerful B Daman ever; the legendary Cobalt Blade. Only he has skills to harness its power. This is his journey into the world of B Daman as he learns valuable lessons and also tries to save the B DaWorld from the evil clutches of the Shadow Alliance.