What would happen if the Eight-Six gets a new upgrade? That’s exactly what Iketani and Itsuki has been thinking about to increase the performance of Takumi’s vehicle. But would Bunta allow it? Elsewhere, team Emperor’s winning streak isn’t slowing down as they continue to sweep across Gunma, defeating every race team with ease. Their next target, Akina’s Eight-Six.

Kyoiichi senses an uncanny fighting spirit within the Eight-Six’s driver, as he gives Seiji strict rules against the race. Seiji however decides to ignore these rules and launches his Evo IV into full power. Takumi is outclassed in almost every category as the Evo IV’s power is truly amazing. The battle risk escalates when the race reaches it’s second half point of the coarse.

In his heart, Takumi couldn’t accept his victory over the Evo IV and decides to make a vow. To add to his already uneasy thoughts … anonymous messages are being sent to Takumi concerning his relationship with Natsuki.

Takumi soon discovers Natsuki’s secret that leads him to vent his anger in an egotistic battle against Kyoiichi at Akagi, thinking little of the huge disadvantage he has.

Mt. Akagi’s battle continues, as Ryosuke has his own theories about streetracing…and he plans to demonstrate it’s difference on Kyoiichi’s Evo III. Back in Akina, Takumi’s routine way of life is gone with the absence of the Eight-Six and the discovery of Natsuki’s secret.

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.

The Toudou School's driver knows all about exploiting a challenger's blind spot. If Takumi hopes to win, he'll have to find a way to leave his opponent in the dark.