Badminton player Shiratori Mikoto is kicked off the powerful corporate team Mitsuhoshi Bank. He gets a job at Sunlight Beverage in order to make a comeback, but he finds waiting for him unfamiliar office work and a small weak team. On top of that, he's forced to play doubles with the boorish and over-familiar Miyazumi Tatsuru...?!

It's the quarterfinals of the national corporate badminton tournament. Their opponents are the powerful Unisics team they lost to in a practice match. The members of SunBev are eager to get revenge. Mikoto and Tatsuru take on Kirishima and Oginome in a rematch. Their match is a fierce back and forth game of offense and defense. From the stands, QA department employee Usuyama watches them play.

The ultimate corporate tournament known as the S/J League begins. Sunlight Beverage makes it into the top four, but for some reason Tatsuru hasn't shown up to their semifinal match. The scheming of an executive director who does not take kindly to the badminton club gets Tatsuru called into a board meeting where he is in danger of being fired. Tatsuru does everything he can to fight back. Meanwhile, Sota and Toya battle fiercely against Kirishima and Oginome of Unisics...

Mikoto injures his eye. Tatsuru tries to forfeit the match, but Mikoto insists on continuing. Against superior opponents and with an overwhelming handicap, the two of them tenaciously hang on. Mikoto, Tatsuru, Takuma, and Izumo--deep connections intertwine in the S/J League finals. The score between Sunlight Beverage vs Mitsuhoshi Bank will finally be settled!