The civilian fishmonger Koshiro was suddenly informed of his true identity and inherited the title of daimyo. He thought it was a beautiful fairy tale of an ugly duckling turning into a swan, but he found that his territory owed a huge debt equivalent to about 10 billion yen today, and there was a shocking conspiracy behind it. This film is adapted from the contemporary Japanese literary giant Asada Jiro's novel of the same name. It brings together an all-star lineup including Kamiki Ryunosuke, Miyazaki Aoi, Matsuyama Kenichi, Asano Tadanobu, etc., and the music is composed by the musical genius Otomo Yoshihide. With the theme of "money", which is closely related to people in any era, it brings the audience a light-hearted, funny, warm and inspiring life reversal drama.