The creature from outer space which appeared on a beach and had a price on its head. Gintoki and Hasegawa heard such a story, they try to catch it with Shinpachi, Kagura and Tae.
Kagura raffled off a trip into the space. But, the spaceship which handymen boarded is hijacked by soldiers of Sonno Joi. Gintoki has a reunion with one of his old friends, Tatsuma Sakamoto, amid the chaos.
Because Yorozuya and Shinsengumi broke the underground-arena, one secret organization puts political pressure on Katakuriko Matsudaira, the Director of the National Police Agency.
While trying to pawn off Gintoki's sword, Kagura is attacked by a crazed sword collector. Later, the Yorozuya gang find themselves in the middle of an invasion by space cockroaches.
Shinpachi was shocked to hear that Tuu Terakado makes a date with Goemon who is one of idol. Soon after, Tuu asks Yorozuya for help because she is threatened by someone.
It has been 2 weeks since Gintoki disappeared. Sagaru Yamazaki, a member of Shinsengumi finds Gintoki in a factory while he is undercover investigating.
Shinpachi and Nekomimi-girl, what will happen to their love? / Katakuriko dotes on his daughter, he wants her to break up with her boyfriend who looks like sleazy guy.
In Christmas Eve, a Santa Clues has a quarrel with his reindeer. Gintoki arbitrates their quarrel. / The characters spend a noisy day as usual on New Year's Eve.
A dangerous extraterrestrial slips into Edo. Shinsengumi receives advice from Umi-Bouzu, a legendary alien-buster of Yato, they put a cordon around the area.
The female characters certain that Kagura left Edo, they fight for the position of the new heroine. / Elizabeth was arrested by a corrupt magistrate. Katsura asks Yorozuya for help.
Revolutionaries attempt to assassinate Hijikata, but Hijikata and Gintoki keep getting into fights. / An old man asks Kagura to play the "kick the can" game, which becomes an all-out war.