An assassin trained as a ninja carries the code name M. Hayami is a yakuza boss and a divorced father who is not allowed to come near his young daughter Mutsumi from his ex-wife Kazuko. In the big port city of Yokohama, M targets Hayami, who has angered the president of his group.

In the world of the near future, citizens seek love, hope and kindness. And those citizens have chosen three brilliant young souls. Together, they make a stand against the ever-evolving crime of the future. A special emergency investigation team is born!

江戸も末の師走。狂言作者の河竹新七は、我が身を嘆き入水を試みるが果たせず、柳橋のそば屋で不遇を託つ仲間たちと偶然出会う。意気投合した五人は、捨て子のおせんを育てるため、株仲間を始める――。やがて御一新。文明開化に五人の命運が変転する。株仲間は国立銀行に、おせんはオペラ歌手に、新七は新作狂言で一世を風靡する……。時代に翻弄される黙阿彌と仲間たちを描く評伝劇。