To stop the bad, the Watch-car champion joins in the most violent league.
A mysterious letter is delivered to Jino, the Watch-car champion of Hero’s cup.
This is an invitation letter of Ultimate Watch-car Battle league , notorious for its violent play. On the way home after watching the league, Jino’s Watch-car Bluewill is abducted by unidentified assailants. While looking for Bluewill, Jino gets to know the gang’s dark conspiracy. To stop the bad, Jino disguises himself as Watch-mask, and decides to participate in UWB. Can Watch-mask be a new hero in UWB?