By a fortunate coincidence, Juan is inspired and encouraged by a girl with the same name. Therefore, he decides to form a lion dance troupe with his friends, Cat and Dog, to break the constraints of reality and fight for themselves for once.

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？