
In an alternate version of feudal Japan, extraterrestrial beings known as the Amanto have invaded and taken control. This has led to a ban on swords, causing the samurai to be treated with little respect. Despite this, Gintoki Sakata remains a true samurai at heart, even if his fondness for sweets and his work as a freelance odd-job man might suggest otherwise. Joining him in his diverse endeavors are Shinpachi Shimura, a bespectacled boy with a courageous spirit, Kagura, who wields an umbrella and has an insatiable appetite, and Sadaharu, their giant pet dog. Their tasks are rarely straightforward, often entangling them with law enforcement, rebellious groups, and assassins, resulting in comedic yet unfortunate situations.