Kagura’s older brother Kamui arrives in Yoshiwara. As the Seventh Division Captain of the Space Pirate Harusame, Kamui is here to talk with the division’s former captain, The Night King, Hosen. At first everything seems to go well, but tensions gradually start to build up… Meanwhile, escaping from Kamui and his men’s attack, Gintoki and the gang take refuge at Tsukuyo’s hideout.