To become a pro, amateur blader Bird Kazami comes to the sacred place "X City." However, he is defeated by rookie crusher Takumi Ishiyama. Abandoned by his teammates, Bird is approached by a mysterious blader, Kamen X, who invites him to join his team. What is the true identity of the one who unleashed the "Xtreme Dash" with super-speed? The battle begins as Bird aims for the summit of the "X Tower," where powerful bladers gather!

Inspired by Kurosu X, who attempts to aim for the top of X Tower from scratch once more, Bird's heart is filled with determination. As his passion to fight ignites, a mysterious person appears before Bird who is worried for losing his bey and being unable to participate in battles. But in reality, this person offers to lend him a bey!? And as the two set their sights on becoming pros in the "Pro Selection Tournament," they encounter a skilled and popular blader who can master Beys with both popularity and strength, Multi Nanairo, who stands in their way!