Talented young drivers compete in the Seiko Cup Rally Series, seeking a spot in the World Rally Championship. At the Supika Racing Factory, chief mechanic Atsuhiro Hiyama is respected by his peers, while his younger brother Naozumi is a gifted but reckless driver. The brothers often clash due to Naozumi's aggressive racing style. Their lives take a turn when Hikaru Endo joins as Naozumi's manager.

Over Drive
Talented young driver Hiyama Naozumi sets his sights on the World Rally Championship, with guidance from his experienced mentor and engineer, Hiyama Atsuhiro, a seasoned car mechanic.