Ziro Zironevic is a quiet first-year student who moves from Germany to Japan with his parents. With no reputation and almost nobody knowing his name, he joins an ordinary high school whose volleyball team is good enough to reach the later rounds of regional tournaments—but never good enough to reach Nationals.

A left-handed outside hitter with an athletic build, explosive jumping ability, and frightening hitting power, Ziro quickly proves that he can break through even strong blocks.

But his greatest weapon isn't his strength.

Ziro studies the court like a puzzle. He notices habits, weaknesses, positioning, timing, and patterns that other players overlook. Rather than relying on one powerful attack, he calculates the best way to win each rally.

As the unknown first-year becomes part of the team, Ziro must learn something that can't be calculated so easily: how to trust six players on the court as one.

To reach Nationals, Ziro and his teammates will have to overcome stronger schools, unpredictable opponents, and their own limitations.

On one side of the net is a team trying to win. On the other is Ziro, already calculating how to break them.