The story is set after Kaido Battle/Tokyo Xtreme Racer Drift, Tokyo Xtreme Racer Zero and 3, but before Kaido Battle : Touge No Densetsu. The year 20XX. Mountain passes became high-tech circuits, equipped with safety devices. Now recognized among street racers, it became the ultimate stadium for car battles. Another day begins and racers gather at the circuits, all trying to be the best. The roar of the engines echo through the mountains... Since Koukami defeated Hamagaki, the former Emotional King, new racers appeared and new circuits opened (Akagi, Zao...) and Koukami is now the new Emotional King. Some Slashers have returned, such as MMC Ooaza and Haruna Guardian, some have moved like Lonely Wanderer, and others have come.