Eiichi works harder and wonders how to make a better indigo plant, but comes up with a strange idea. Meanwhile, the Shogunate is confused by the return of Perry. Nariaki puts a stranger, Hiraoka Enshiro, as a small surname in order to give his son, Yoshinobu, who is a candidate for the next shogun, an excellent vassal. Finally, the Convention of Kanagawa is signed. Rumors of the opening of the port reachs Chiaraijima, and Eiichi and his colleagues are stunned. Meanwhile, Eiichi, who is given a large amount of money from his father, Ichiroemon, begins to feel something is wrong with the world. (Source: NHK)