Set in Crest Land, the anime centers around the chaotic behavior of the enigmatic B-Crystal. The spirited lead, Godai Kamon, resides in Crest Land's southern region and possesses an immense passion for B-Daman. However, Kamon has lost all memories related to B-Daman and his family, with the exception of his elder sister Aona, who resides alongside him. During a visit to B-Junk, a local B-Daman store, Kamon encounters Galvan, a B-Daman in whom he detects a strange sense of familiarity. Galvan becomes Kamon's ally and reintroduces him to the world of B-Daman combat.