An abandoned child Yokichi was raised by a thief Tsukinowano Okuma and became a chivalrous robber Nezumi kozo who steals money from daimyo (Japanese feudal lord) and wealthy merchants and provides it to the poor.
捨て子の与吉は盗人・月の輪のお熊に育てられ、大名や豪商から金子を盗み貧者に分け与える義賊・鼠小僧となった。