Editor-in-chief Koizumi requests help from Yamaoka. Koizumi's son Norio, a last-year student in jr. high, is not studying for his exams, and instead stays out late, drinking alcohol and getting into trouble. Koizumi believes that, since Yamaoka is a former delinquent, Norio might listen to him. Yamaoka takes Norio to a bar where Yamaoka is greeted by two intimidating men who Norio believes are Yakuza.
受験を控える小泉局長の息子が補導された！仕事人間で家族の機微にうとい小泉はうろたえ、感情的になって父子の間は一層険悪になるばかり。土郎の伝授した“及第ガユ”が家庭の危機を救えるか？
