The series is set in the near future. An automobile company named JHC Motors has created the Watch Cars, which are miniature sentient robotic cars that have become good companions to children and adults alike. Ever since, Watch Cars have become a global trend. The Watch Car Battle League is a competition where Watch Cars battle alongside their trainers. Jino, one of the young Watch Car Masters, goes to the Watch Car Battle League with his Watch Car Bluewill. As the undefeated and undisputed champion of the league, Kai remains a legend. Jino and his WatchCar Bluewill have to jump over all obstacles ahead to defeat him and become the new league champion. Meanwhile, the evil organization the Black Shadows attempts to eliminate all Watch Cars using their Monster Watch Cars. Can Jino, his friends Ari, Maru, Roy and their Watch-Car s overcome their hurdles? Lock and load. The most intriguing adventure has started.