The first act describes the debauchery of Isonojo and wrongdoings of Sagaemon who illicitly loves Kotoura, while the beggar Tokube narrates his own despair, and also describes the ingenuity of Okaji who admonishes Isonojo, and other matters.
磯之丞の放蕩と琴浦に横恋慕する佐賀右衛門の悪事に、乞食の徳兵衛に自身の落魄ぶりを述べさせ磯之丞を諭すお梶の智略などを描く。