爆走兄弟レッツ＆ゴー

Mini 4WD racing is an interesting hobby in where kids and adults compete using customized motorized miniature cars. Every year, competitions revolving around the hobby circulated around the world, with both kids and adults test out their spirit and passion in racing and companies developing new technologies and innovations for Mini 4WD. The story revolves around the competitive Seiba Brothers: Go and Retsu, who were once constantly arguing on each other to see who's the best racer. However one day after a community-sponsored race, they both met Dr. Tsuchiya, the head of the Tsuchiya Racing Factory who gave them two Mini 4WD Cars of the prototype Saber Series: Sonic Saber and Magnum Saber. With his advice on telling the twins to customize them for the upcoming race, they are now determined to win and race to victory and set off to their wildest race of their lives. While meeting both friends and enemies in the Mini 4WD Racing world.

During the WGP's Royal Festival Cup, an unknown machine called the "Gun Bluster XTO" and its owner Rion Cusco appears racing without control and causing various riots with fellow racers. This makes Go's Cyclone Magnum reach the goal but a dissatisfied Go and the TRF Victorys decides to pursuit the situation. This was all due to the Gun Bluster's special GP Chip invented by Professor Cusco gone haywire while emitting strange EM waves, making the machine a powerful weapon. To avoid further destruction to the city, Professor Cusco decides to destroy the machine before a rival association acquires it. It's up for the TRF Victorys and Rion race together and safely halt the Gun Bluster before its too late!