Tokyo, 2017. With the 2020 Olympics three years away, the city is racing to rebuild, tearing down and renovating the Shutoko highway network and putting up new facilities. The Hyuga Corporation is booming thanks to its breakthrough with artificial muscle fibers. In secret, it is building a powered suit meant to give people of ordinary fitness the abilities of elite athletes, part of a plan to crush its rivals. Dan Amo is a forgettable clerk in Hyuga's general affairs office by day and a devoted motorcyclist by night. On Route 246, mysterious riders in black suits keep appearing, trailed by freelance journalist Makina Mikage, while Hyuga heir Kotaro Hyuga enters the picture too. A four-episode sci-fi action ONA with a motorsport edge.