The "Tenkaichi Bancho-Kai," a tournament to determine the strongest bancho, is held! The winner will be given the official right to obtain the "white uniform" that Kunio wears, and so the most skilled delinquents gather one after another from all over the country. While Kunio and Riki are steadily winning, Misako, an idol of Nekketsu High School, is kidnapped by Taiyo High School.
最強の番長を決める大会、「天下一番長会」が開催！優勝者には、くにおの着る「白ラン」を手に入れる正式な権利が与えられることから、全国から凄腕の不良たちが続々と集結してくる。くにおとりきが順調に勝ち進んでいく中、熱血高校のアイドル・みさこが太陽学園に拉致されてしまう。
