After a one-year break, Shinpachi Shimura returns to Edo, only to encounter a shocking surprise: Gintoki and Kagura, his fellow Yorozuya members, have turned into completely different characters! Fleeing from the Yorozuya headquarters in confusion, Shinpachi discovers that all the residents of Edo have undergone impossibly extreme changes, in both appearance and personality. Most unbelievably, his sister Otae has married the Shinsengumi chief and shameless stalker Isao Kondou and is pregnant with their first child. Bewildered, Shinpachi agrees to join the Shinsengumi at Otae and Kondou's request and finds even more startling transformations occurring both within and outside the ranks of the organization. However, discovering that Vice Chief Toushirou Hijikata has remained unchanged, Shinpachi and his unlikely Shinsengumi ally set out to return the city of Edo to how they remember it. With even more dirty jokes, tongue-in-cheek parodies, and shameless references, Gintama' follows the Yorozuya team through more of their misadventures in the vibrant, alien-filled world of Edo.