操作赛艇的“推进手”与使用水枪攻击对手的“射手”两人一组乘坐摩托赛艇,横越水面的运动“喷射竞速”成为主流的世界。母亲是传说中的推进手,自己也梦想成为喷射竞速选手的波黄凛,离开故乡所在的岛,来到了东京浅草。她在那里遇到了冰山美少女苍井美沙,两人成为了搭档。她们在与对手们展开竞争的同时,也逐渐加深着彼此的牵绊。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.