After the Dawn Rebellion, Char travels to Earth and meets a girl with mysterious powers named Lalah Sune.
Meanwhile, Amuro's father Tem Ray is working on the RX-78 development project. Learning of the defection of Doctor Minovsky, a key figure in Zeon mobile suit development, he heads for the moon. History's first battle between mobile suits unfolds in the twilight zone of the lunar surface.
Then comes Universal Century 0079. Side 3, the space city furthest from the Earth, launches a war of independence against the Earth Federation government under the name of the Principality of Zeon.
An era of violent upheaval begins, in which half of the total human population will be killed...

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.

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.

Universal Century 0074. Since leaving Texas Colony, Édouard Mass has camouflaged his identity and enrolled in the Autonomous Republic of Zeon's Space Defense Military Academy under the name of Char Aznable. He develops a friendship with his classmate Garma, a scion of the Zabi family. Gradually the two become admired by the other students. Then, in Universal Century 0077, the young at last rise up in arms and begin the fight for independence against the Earth Federation's security forces. This rebellion, however, also marks the beginning of Char’s spectacular scenario of revenge… Now, the gears of history are turning!

The episode will focus on the young Zeon ace Char Aznable earning his "Red Comet" nom de guerre, as well as the beginnings of the Federation's "Project V" weapons project that will eventually birth the RX-78-02 Gundam.