Sakata Gintoki, who runs the Master House, became the head teacher and Chinese teacher of Class Z in the high school department of Kabuki Middle School due to insufficient rent.
In the class there are glaucoma tsundere Hijikata Jūshirō, slutty and sinister Okita Sougo, naturally stupid Katsura Kotaro, middle school patient Shinsuke Takasugi, the ah-ha bastard Sakamoto Tatsuma who grew up together and other brats who always trouble themselves, and outside the school there is the stupid Yatsura who fights violently and is crazy. Usagi Kamui, the boss of the Kaimei group, Issaburo Sasaki, who is addicted to mobile phones, and, yes, there is also a certain Phantom Cowherd duo Kintoki and the White Blood Cell King who look very similar to him. There are so many troublesome people that even a 19-year-old genius who skipped a grade in college can't deal with them, right?