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.

Unlike his friends, Takumi Fujiwara is not particularly interested in cars, with little to no knowledge about the world of car enthusiasts and street racers. The son of a tofu shop owner, he is tasked to deliver tofu every morning without fail, driving along the mountain of Akina. Thus, conversations regarding cars or driving in general would only remind Takumi of the tiring daily routine forced upon him. One night, the Akagi Red Suns, an infamous team of street racers, visit the town of Akina to challenge the local mountain pass. Led by their two aces, Ryousuke and Keisuke Takahashi, the Red Suns plan to conquer every racing course in Kanto, establishing themselves as the fastest crew in the region. However, much to their disbelief, one of their aces is overtaken by an old Toyota AE86 during a drive back home from Akina. After the incident, the Takahashi brothers are cautious of a mysterious driver geared with remarkable technique and experience in the local roads—the AE86 of Mount Akina.

Thwarted again by Naraku, Inuyasha, Kagome Higurashi, and their friends must continue their hunt for the few remaining Shikon Jewel shards, lest they fully form into a corrupted jewel at the hands of Naraku. But Naraku has plans of his own to acquire them, and will destroy anyone and anything standing in his way—even his own underlings. The persistent, unyielding danger posed by Naraku forces Sango and Miroku to decide what is most important to them—each other or their duty in battle. Meanwhile, Inuyasha must decide whether his heart lies with Kikyou or Kagome, before fate decides for him. Amid the race to find the shards, Inuyasha and his brother Sesshoumaru must also resolve their feud and cooperate for their final confrontation with Naraku, as it is a battle they must win in order to put a stop to his evil and cruelty once and for all.

Kunyan lives her crazy life of misadventures from episode to episode. This comedy series is accompanied by a narrator who scientifically explains all that happens to her.