Rin is a young racer with an obsession that most kids outgrow: miniature four-wheel drive cars. When a sinister scientist threatens global peace with a weapon disguised as cutting-edge racing technology, Rin discovers that his beloved hobby is the only thing standing between humanity and total annihilation. What begins as innocent competition transforms into something far more urgent. Rin's customized mini car becomes his unlikely weapon in a high-stakes battle against forces that want to weaponize the racing circuit itself. Every upgrade, every tuning adjustment, every race now carries weight beyond victory or defeat. The charm of this OVA lies in its earnest commitment to making miniature car racing feel genuinely consequential. This isn't a world where saving the planet requires superpowers or military arsenals. Instead, it's won through mechanical ingenuity, racing skill, and the kind of determination only a kid with something to prove can muster. If you grew up tinkering with toys or racing anything with wheels, this captures that magic while wrapping it in spy-thriller stakes that feel both absurd and surprisingly earnest.