Jet Racing is a popular sport where teams of two girls work together. They consist of a Jetter, who pilots the watercraft, and a Shooter, who fires a water gun at rival teams. Aspiring to be a Jetter just like her legendary mother, Rin Namiki decides to leave her home in the countryside in order to realize her dream. Arriving in Asakusa, she meets Misa Aoi and they form a partnership.