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…