Johnny, an exchange student from the U.S., transfers to Nekketsu High School. Johnny used to be a promising basketball player, but in order to earn money for his younger sister Mary's surgery, he has been working hard at various part-time jobs. For Johnny, Kunio decides to enter a basketball tournament with a prize of 10 million yen.

The shopping district in the town where Kunio and his friends live has long since lost its former liveliness and has become completely deserted. Then, a businessman by the name of Togo proposes to hold a town-wide "sports festival" to revive the shopping arcade. The prize for the winner is a special promotion ticket worth 100 million yen, which can be used only in the shopping arcade.

Riki's unexpected injury and the existence of a contestant who has been in touch with Togo has thrown the event into chaos. The "Athletic Meet," which started with great pomp and circumstance to revive the shopping arcade, has somehow taken a sinister turn. Kunio asks Togo to cancel the event, but Tadokoro, who desperately wants the prize money to save the shopping district, persuades him to continue the competition.

There was a series of disturbing developments around Kunio. Riki, Tadokoro, and Riki's senior, The Blue Emperor, were attacked by someone one after another. It was all the work of Sabu, a member of the Kanto Sanwakai, who was after Kunio's white uniform. Driven by remorse, Kunio vows to avenge Riki and the others, and gradually loses himself in anger.