This drama tells the story of the poor man Omori Ichihei who was forced to the edge of the cliff of life and hated his family and children. In order to be elected as a member of parliament, he lives with his single father's brother-in-law and his children.In the process of facing family, society and Japan in daily life, the worst man and his brother-in-law and his children gradually established a relationship like a real family, and gradually began to create a better society, and eventually participated in the election seriously and became candidates, depicting the figure of %Number one worst man in Japan, who strived to change family, society and Japan.