A phantom thief queen—whose age and gender are unknown—flies around the world on an airship in search of treasure. A gemstone the queen had their sights on is stolen from them by a mysterious circus troupe, and a game soon unfolds between the queen and the troupe's magicians, hypnotists, and other members wielding special abilities.
Universal Century 0079. Humanity has turned even space itself into a battlefield, and the Principality of Zeon forces advance after wiping out half the world's population by carrying out the Operation British (colony drop). In response, the Earth Federation Forces mobilize their overwhelming fighting strength to regain the advantage. The complex intrigues of the Zabi family... Sayla Mass, as she contends with the whims of fate... Hamon and Ramba Ral, who is now a pilot in the Zeon forces... Amuro and Fraw, leading peaceful lives at Side 7... a dark shadow falls across them all. And the Zeon ace Char Aznable, driven by revenge, goes into action as the "Battle of Loum" finally begins.
In the year UC 0071, three years after escaping the Zabi faction on an Ocean Cargo ship, Artesia and Casval are living happily in Andalusia, Spain, Earth under the identities of Sayla Mass and Éduoard Mass, respectively; masquerading as the children of Don Teabolo Mass, a long time friend of their father Zeon Zum Deikun.
After arguing about whose fashion sense is better, Takaharu and Kinji go outside with their costumes to be judged by the public. Expectedly, they are laughed at due to their outrageous costumes. They then notice a dark aura surrounding several stones, which Kinji depicts as Hyakki Yakou, an event in summer where a hundred Youkai would revive and destroy the town at night.
Universal Century 0068, Side 3 - The Autonomous Republic of Munzo. Zeon Zum Deikun attempts to declare complete independence of Munzo from the Earth Federation Government, while he preaches the evolutionary potential of humans who have advanced into outer space. Deikun however suddenly falls to his death in the middle of his speech at parliament. Upon Deikun's death, Jimba Ral spreads word of a House of Zabi conspiracy - but despite such efforts the power and sphere of influence of House of Zabi, led by Degwin Sodo Zabi, only seem to escalate. While we witness for the first time the untold convulsions of Universal Century history, Casval and Artesia, just bereaved of their father, must face destinies which will be just as tumultuous as the very era itself.
What would have happened if the Shiroyasha never existed? Edo is thrown to chaos by a mysterious cause. Sakata Gintoki, now lives in a world where the future has changed, without him. What has happened to the Yorozuya? Gintoki, who is now a ghost of the past, must once again carry the burden in order to save his friends. He must finish the biggest job ever, which may be the final job of Yorozuya.
