Aliens in outerspace, the Amanto, have invaded Earth and taken within Japan. As a result, a prohibition on knives was established, and Japan's samurai are treated for an effect with discount. However Gintoki Sakata, 1 person possesses the core of the samurai, although out of his love of candy and act for a yorozuya, an individual might not expect it. Accompanying him in his jack of all trades line of work have been Shinpachi Shimura, Kagura with her umbrella a boy with glasses and a spirit and stomach, as well as their that is oversize, Sadaharu. Of course, these strange tasks aren't always easy, as they generally have run-ins with rag tag rebels, the authorities, and assassins resulting in consequences that are humorous but unfortunate.