It has been 50 years since mankind began its migration to the terraformed Mars, where they live in comfort due to advancements in AI. Carole lives in the metropolis of Alba City, working part-time by day and playing keyboard by night. Tuesday has run away from her home in Hershell City to escape the grip of her wealthy family, and instead hopes to pursue music with her acoustic guitar. After a fateful encounter, the two decide to perform music together. Up against the AI singers that dominate the music world, the two of them believe that together they can convey their feelings through their songs. Will hard work and luck be enough for the duo to create the biggest miracle that Mars has ever seen? [Written by MAL Rewrite]

During the dawn of the 21st century, the United Nations Kurobe Research Institute was established in Japan to investigate an ancient artifact, which was discovered during the construction of the Kurobe Dam. Scientists from around the world have gathered in the facility to study the object, while their children enjoy their everyday lives attending Mt. Tate International Senior High School. Yukina Shirahane, a reserved high school girl, is the daughter of the facility's head scientist. While visiting her mother at the facility, Yukina manages to solve part of the artifact's puzzle. To her surprise, what appears before her is Kennosuke Tokisada Ouma, a young samurai from the Sengoku era. As a threat approaches from outer space, Yukina, along with Kennosuke, finds herself defending Earth against the invading forces. Along the way, she discovers the mystery behind Kennosuke and the reason he is determined to protect her. [Written by MAL Rewrite]

Gintoki, Takasugi and Katsura fight past the Tendoushuu forces, who have taken over the Terminal. The mothership at the top of the terminal is absorbing large amounts of Altana and channeling it into the body of the child Shouyou in order to resurrect him and obtain true immortality. As the group is attacked, they split up into two, with Katsura holding on to Shouyou's heart. Katsura and Hitsugi engage in a fierce battle, and the latter eventually stabs and destroys the heart, revealing that he had no intention of reviving the child; he only wanted to free Utsuro from the curse of immortality. Without the heart, Shouyou would only be able to regenerate and maintain his body temporarily. In the terminal, the Shinsengumi, Hyakka, Oniwabanshu and the rest of the Kabukicho residents fight the rest of the Tendoushuu army, while Matsudaira shoots down the ships outside. Then Gintoki reunites with Kagura and Shinpachi and they rush towars the top of the terminal.In the meantime, Takasugi reaches the Tendoushuu's ship to find that Shouyou has been revived and killed off the rest of the Tendoushuu. Shouyou's only wish is to put an end to himself and Utsuro. Takasugi begs Shouyou to return to Shoka Sonjuku with him. Shouyou apologizes for not being able to save his disciples, the ones that he truly wanted to protect. As he approaches Takasugi, the latter stabs him, revealing that Utsuro's blood has taken over his body as well. This causes a large explosion at the top of the Terminal. Gintoki is separated from the others and faces off Utsuro, now manifesting in Takasugi's body, Utsuro comes to a realisation that Takasugi did not stab Utsuro earlier. Instead, supported by Oboro whose blood also runs through his body, Takasugi stabbed himself. The body that Utsuro saw lying on the ground was himself. Gintoki and Utsuro fight each other.

"I have a duty to see everything that happens. No matter how much pain and sadness there is... Because I am Spearhead's handler." recaps the story told in through the perspective of Vladilena "Lena" Milizé—the commander of Shinei Nouzen and the Spearhead Squadron. [Written by MAL Rewrite]