Riki Ryugasaki is a school boy in this town. He wants to be an adventurer when he grows up and his favorite word is “mystery.” Riki has a lively personality, but can be a bit of an airhead at times - he marches to the beat of his own drum. One day Riki is taken to his first B-Daman event by his friend and classmate, Sumi Inaba. Although he doesn’t participate as a player, Riki’s natural curiosity sparks an interest towards B-Daman. And when Riki hears an urban legend about “a secret B-Daman tournament (a tournament that only a very selected group of players are allowed to participate)” spreading amongst the children of the town, he realizes that there is something very mysterious and exciting about B-Daman...

不久的未来，青少年之间开始盛行着弹珠人竞技，然而在弹珠人竞技界中有出现如此的风声：“传说有个只有被选上的稀有弹珠人参赛者才能参加的『秘密弹珠人大赛』”。在此同时，其中一位刚接触弹珠人的玩家龙崎翔，伴随着他手上的弹珠人“神威苍龙”，想借由在这场死斗中一路过关斩将，揭露其中“秘密竞赛”的真面目......

Riki Ryugasaki is maar een gewone jongen die van mysterie en avontuur houdt. Op een dag maakt hij kennis met een spel genaamd B-Daman door zijn vriend, Sumi. Hij begint een B-Daman te kiezen en pakt de blauwe draak, Dracyan, op. Wanneer hij Dracyan registreert, ontvangt hij een uitnodiging voor een geheim toernooi genaamd Crossfire, waar B-Shots, de speciale gast, over B-Daman spreekt alsof hij meedoet.

Riki Ryugasaki é apenas um garoto comum que ama mistério e aventura. Então um dia ele é apresentado a um jogo chamado B-Daman por seu amigo, Sumi. Ele começa a escolher um B-Daman e pega o dragão azul, Dracyan. Quando ele registra Dracyan, ele recebe um convite para um torneio secreto chamado Crossfire, onde B-Shots, o convidado especial, fala de B-Daman como se ele competisse.