Gintama. Shirogane no Tamashii-hen - Kouhan-sen

The Altana Liberation Army has temporarily withdrawn from Kabuki District, but Edo is far from safe. As the Shinsengumi, Oniwaban, and local residents fight the remaining forces, inventor Gengai Hiraga is abducted, placing the nanomachine virus that disabled the enemy's weapons in danger of being neutralized.

Above Earth, an even greater threat awakens: a laser aboard the enemy mother ship capable of destroying an entire planet. Shinsuke Takasugi and the Kiheitai move to stop it from orbit while the Yorozuya and their allies continue the battle below. Saving Edo now means winning two desperate fights at once.