Hit Tamaga, who has been living on his own since his father went missing, receives a Crash B-Daman, his first B-Daman, as his birthday present from him. Holding this message from his father in his heart, Hitto makes up his mind to participate in B-Daman battle tournament called 'B-1 Crash Cup.' Through the battles, Hit encounters a lot of rivals and sometimes develops friendships with them. After the tournament, he comes to know about a secret society of rascal B-Daplayers who find reason for living only in crashing. What is their true purpose? And what secret is there besides Hit's B-Daman?