As the Bike Club makes plans to hold a race during the upcoming school festival, Tazuko recalls how Raimu won a lot of money through betting only to spend it on a load of bikes her friends considered to be ugly. Later, Hane learns about the various ways people mod their bikes and the difference they actually make. Put in charge of designing the race, Hijiri decides to add betting and a cash prize to make it more interesting. Meanwhile, Onsa receives a modded Yamaha TZR250 3MA from her father, discovering it to be more powerful than its reputation suggests.