In the year 2010 AD, Hyper Hurricanes born concurrently all over the world caused severe damage. Five billion people lost their lives, decreasing the world's population to 3 billion. Existing economies and military were wiped out. Countries were frozen under solid ice, plains sank beneath seas, the world was changed dramatically. Human civilization enters a chaotic era. Poverty flourished outside of these economic zones and slums were widespread. The ruling class called themselves Logos and maintained their position by force of arms. They call the poor Revenus, who are exiled to live outside the special economic areas. Time has passed since then. Katsuragi Jo and Tsurasawa Jin, escape from Phantom, a force organized to watch Revenus and to suppress renegade elements of the Logos, taking with them a mysterious girl, Nobuto Sana. There are many who are interested in her, all with their own reasons.

Extra Stage - Act 1 The Emperor—a racing group consisting of several Mitsubishi Lancer EVO drivers—has defeated every racing team they have come across in Gunma Prefecture. Now, they set their eyes on conquering Mount Usui and the legendary Impact Blue racing duo, who hold the record for the Usui Pass. In her blue Nissan SilEighty, Mako Satou and her navigator Sayuki rise to the challenge to defend their title. However, Mako's recent woes begin to affect her concentration. Sensing that her rhythm is off, Sayuki helps her out, but will she be able to resolve it before the decisive race? Extra Stage - Act 2 Sayuki thinks Mako's life could improve if she had a boyfriend and sets her up with her perfect match—Miyahara from the Myogi NightKids. Though the relationship starts smoothly, Mako's past relationship haunts her once more. Faced with the possibility of giving up street racing entirely, Mako will have to choose between love and her dream of being a professional racer.

Accumulating an impressive series of victories with his AE86, Takumi Fujiwara has imposed himself as street racing's newest rising star. However, his newly found confidence of winning at his home turf of Mount Akina has been put in jeopardy by a new Emperor team exclusively using a car model favored by most professional racing pilots: the Mitsubishi four-wheel drive Lancer Evolutions—also known as Lan Evos. The Emperor team leader, Kyouichi Sudou, looks down on Takumi and regards him as an inferior pilot for driving an antique car that lacks the makings of a true modern race car. Kyouichi's elitist philosophy is also the reason why his team is only made of Lan Evo drivers. Will Takumi be able to keep his perfect track record intact against the highly skilled and mechanically superior Emperor team, or does his hot streak end here?

Dissatisfied with Impact Blue's growing reputation as the fastest racer on Mount Usui, Mako Satou decides to break out of her mold and dedicate her time toward becoming a professional racer. However, as she prepares for this next stage in her life, Mako bumps into an ex-boyfriend, prompting an awkward exchange that makes her resolve waver. But, the question arises whether this second chance at love is enough for Mako to give up her newfound passion for racing permanently.