With the Eight-Six out of the picture, the RedSuns has become the main representatives of Gunma, as every local racer within the prefecture are in favor of Emperor’s defeat. Ryosuke has returned on the street to defeat the revenge-seeking Kyoiichi, who plans to use his theories of motorsports against the White Comet. Also, Iketani and Kenji spot another racer from a neighbouring prefecture.

The Eight-Six has returned undergoing a major change. Takumi soon test-drives the new performance much to his mixed satisfactions and disappointments, but what he doesn’t understand is what Bunta knows what’s within that car. Also, the relationship between Takumi and Natsuki is falling apart, but Itsuki’s heart is shaken with the appearance of Kazumi.

After Wataru issues a short-lived battle against Keisuke, his sister Kazumi introduces him to Itsuki leading to a chance meeting with another Eight-Six driver. At first everything seems right with the meeting, but because of Takumi’s naïve reaction to his car’s new downhill weapon, Wataru rubs it the wrong way as his bad side emerges.

Fujiwara takes up the challenge and decides where the battle would take place. But before he can accept Wataru’s challenge, he’ll have to learn the most basic essentials of what it means to be a streetracer. Also, Itsuki’s relationship with Kazumi is teaching him the value of having a girlfriend.

Fujiwara is about to experience a completely different type of racer within Wataru’s own Eight-Six, in a treacherous mountain pass consisted of mixed elevations, rusting guardrails, unexpected traps and aging rough pavements. As Takumi presses down the accelerator, the true nature of the Eight-Six’s new hidden weapon emerges in it’s monstrous raw performance.

The battle between the two Eight-Sixes have met Wataru’s satisfaction much higher than he expected, but he plans to decide the outcome of this battle with the judgement of the human body’s limitations. Takumi soon realizes he is losing grip of his pace. After the battle, a series of revelations take place among all the characters in preparation to what’s coming next.

Project D might be in trouble. The leader of the Northern Saitama Alliance has recruited a bold new driver to face Takumi. Ryosuke knows victory isn't a sure thing, and as the race begins, so does a heavy rain.

Takumi is locked in the toughest race of his career! With Ryosuke's odd advice echoing in his mind, and the Cappuccino still leading, his decision in the last straightaway will be the difference in victory or defeat.

Keisuke and Wataru's grueling race continues in the pouring rain. Meanwhile, the Cappuccino driver picks Takumi's brain, trying to better understand his amazing abilities behind the wheel.

After driving the Impreza, Takumi begins to question his abilities behind the wheel of the Eight-Six. Itsuki's got his own emotional turmoil after a date with Kasumi takes an unexpected turn.