Dan JD is a young basketball player that terrorizes the city of Rolling Town under his alias "Dunk Mask". When he invades a match of BFB (Big Foot Basketball), he gets himself in more trouble than he could handle.
After one year of imprisonment, Dan finds that his performance at the stadium inspired players throughout the city, but the commotion he caused left him with a huge debt on his shoulders. To complicate matters, he is challenged by another skilled player: Sela D. Miranda AKA the "Platinum Gale".
Dan and Sela's match is interrupted by a mysterious player who started tossing balls at crushing speed at them. After some investigation, this player is revealed to be Iceman Hotty, the same person who stopped Dan at the stadium one year before.
Dan, Sela and Iceman are approached by Haruka Gracia, a shoemaker from the moon who created special tennis shoes for their Big Foots, and arranged a three-way match between them. After some thinking, Dan came up with a method to have the upper hand against Iceman.
The match between Dan, Sela and Iceman is interrupted by the police, and Haruka arranges a 3 on 3 match between them and a vicious underground team. Meanwhile Flora escapes the castle and sets for Rolling Town where she ends up being helped by Coco.
The previous match increased the popularity of Basquash through town, but the sport was outlawed due to the damages it causes to properties. To complicate matters, James Loane, a famous BFB player from the moon creates a new official league called Open City Basketball (OCB) featuring street players and BFB players alike.
Jame's efforts to monopolize Basquash creates conflicts between street players and BFB players while Dan wonders about accepting his offer to join OCB or not.
