Samurai Gintoki Sakata works in a freelancer business, Odd Jobs Gin, after Edo was conquered by aliens named Amanto in order to pay the monthly rent from where he lives. In his days, Gintoki is joined by Shinpachi Shimura, a teenager son of a samurai who wants to learn about him, and Kagura, an alien girl who went to Earth to earn money for her poor family, but is unable to return home and threatens Gintoki to let her live with him. While Kagura and Shinpachi live with Gintoki, they meet a terrorist named Kotaro Katsura who participated alongside Gintoki in the war between samurais and aliens, and lost. Odd Jobs is forced to help Katsura escape from the Shinsengumi, a police force working for the Bakufu, after they accidentally perform a terrorist attack. The volume ends with a one-shot from Sorachi named “Dandelion”, which explores the work of a pair of exorcists.