It is hard to imagine that the infamous "Immortal Dragon," once the most notorious gangster of his era, is now leading a simple life as a humble househusband. Having abandoned his ways as a yakuza, Tatsu, known for his legendary battles against rival gangs, has vanished, leaving most unaware of his whereabouts. However, Tatsu is, in fact, residing in an apartment with his wife, striving to live a peaceful and contented life. Tatsu dons an apron as he attempts to master the art of homemaking. He has honed his culinary skills, bargain-hunting abilities, and every other quality needed to become a successful homemaker. This transformation has astounded both his subordinates and former foes. Even though Tatsu's past is controversial, his present way of life only adds to the enigma he has become.