Photographer Kouya Madoka is assigned to work a Super GT event, but as he wanders through the support race paddock, his curiosity is piqued by the sheer variety of teams and drivers on display in the world of Formula 4.

An inspired Madoka barges into Komaki Motors HQ and declares he wants to sponsor their F4 outfit, but it quickly becomes apparent that he has no idea how much it actually costs to go racing.

Komaki Motors finally have a sponsor, but Haruka may not be so happy about the terms of the deal. Though out on track, money for more tires equals more practice time. Can Haruka make good use of the extra track time?

The commercial is ready to air, but Haruka isn't happy about Kouya's photograph being inserted, leading to past traumas being revisited.

Haruka and the two drivers from Belsorriso, Satsuki and Toshiki, take part in a race of a different kind.

Haruka is flying high in qualifying for the next round at Suzuka, but when race day comes and the heavens open, he is faced with the tough decision of which tires to run.

Satsuki's horror crash reopens old wounds, and to make matters worse, Mikazuki Beverages abruptly end their sponsorship deal with Komaki Motors. How will Haruka—and more importantly, Kouya—cope with this sudden turn of events?

While Satsuki recovers from his injuries in hospital, his replacement hasn't exactly impressed those in charge at Belsorriso, leading their eyes to be cast in the direction of Haruka.

Haruka tracks down Kouya, who has returned to the small town that was ravaged by a tsunami triggered by an earthquake 12 years before.

Now that Kouya has found some form of resolution to the trauma haunting him, everyone's attention turns to Haruka and his goal of standing on the top step of the F4 podium.

After a disappointing conclusion to the last race due to his tires going off, Haruka is determined to do better next time out. Meanwhile, Harunaga is out of the hospital and straight back in the car.