Sakada catches a thief who secretly recorded a movie in a theater, but after being enveloped in a dazzling white light, he is taken to a strange world. Edo's skyscrapers were turned into uninhabited ruins. It turns out that the world Sakada was brought to five years in the future, and a virus called "White Curse" has spread throughout the past years and the world has been ruined. He meets Shimura Shinpachi and Kagura, who have grown up through everything in a deserted street. It seems that in the future world, Sakada died studying about the White Curse. Shinpachi Shimura and Kagura fight against the enemy to protect Edo. With a pseudonym called Gintoki, he return to the devastated streets of Edo where his friends are. After that, Sakada takes on the heavy duty of changing the gloomy future......

During the Edo period, a mysterious man appeared in front of the samurai Katsura Kotaro. He held the demon sword "Red Sakura" and asked for a sword test. After this night, Katsura went missing. Katsura’s pet Elizabeth finds Kagura and Shinpachi in the House of All Things, and entrusts them to find the whereabouts of the owner. At the same time, Gintoki was also commissioned to find the whereabouts of the evil Red Sakura. The clues of the three people all point to an airship. Because it was far away from the police's jurisdiction, the evil forces in the airship covered the sky with one hand. There, Gintoki met Shinsuke Takasugi, his former comrade-in-arms, and Takasugi is now leading his ghost soldiers in an attempt to destroy Edo. On one side is a vicious terrorist, on the other side is the tyrannical and bloodthirsty Demon Sakura Kosakura. Can the seriously injured Gintoki escape safely and save Edo?...