In near future, renowned “JH Motors” creates high-tech AI toy cars, “Watch-Car” for kids. This AI equipped mini car can truly be your friend! In burst enthusiasm around the world, there opens a battle tournament “Watch Car Battle League (WBL)”. Soon this battle sport using Watch-Car gains world-wide fame. “Twelve Masters” of the game shall compete each other and win over Black Czar “Kai” the last year’s champion to become a winner. Meanwhile, evil organization “Shadow” appears and tries to eliminate Watch-Car using their “Monster Cars”. Our hero “Jino” also enters WBL with his own “Bluewill” and dreams his way to the top. Lock and load! The most intriguing adventure has started!