Kazuhiko Kogure, who is a 2nd grade student in middle school, falls off from one of the school's rooftop. There were other male students on the roof when Kazuhiko Kogure fell off. According to the other students there, Kazuhiko Kogure tried to jump to another school building, but missed. Fortunately, Kazuhiko Kogure only fractured his leg and ribs. According to Kazuhiko Kogure's mother Hidemi, the school insists it was students playing around and did not involve bullying. Hidemi though, doesn't believe it, because Kazuhiko Kogure has a fear of heights. Hidemi goes to see attorney Machiko Mayuzumi and Machiko decides to take her case, but she asks for fellow attorney Kensuke Komikado's help. Meanwhile, the school hires attorney Teshigahara Isao.

泡沫经济时期（1992年），背负着悲惨过去的庆应大学毕业生半泽直树如愿进入产业中央银行就职。银行内部有着“旧东京”与“旧产业”派系斗争。这一年，半泽直树就任东京中央银行大阪西分行融资课课长已有两年。坚信人性本善的他在履行银行家职责的同时坚守着普世的道义。半泽能否凭一己之力改变这冷漠腐化的现状？他能否对抗银行内外的敌人、贯彻自己的信念？