Focuses on Kimichika Haijima, who got into some serious trouble on his middle school volleyball team, and as a result transferred from Tokyo to Fukui prefecture, where he again met with his childhood friend, Yuni Kuroba. Yuni has overwhelming talent at volleyball but is weak to pressure, but together with Kimichika they become the ace combo of their team. But the two have a fight at the final prefecture tournament in middle school. Now in high school at Seiin High School, Kimichika and Yuni have severed their relationship, but both join the volleyball club. Along with the second-year and third-year students in the club, they work to make Seiin High School's volleyball club a rising star in Fukui prefecture.