Universal Century 0068, Side 3 – The Autonomous Republic of Munzo.Zeon Zum Deikun, preaching the reformation of humanity through advancement into outer space, has been attempting to declare Munzo's complete independence from the Earth Federation government. Suddenly, he collapses and dies in the middle of a speech to the Diet.
Upon Deikun’s death, his aide Jimba Ral begins spreading conspiracy theories about the Zabi family. But despite his efforts, the Zabi family, led by Degwin Sodo Zabi, intensifies its secret maneuvering to seize control of Side 3. As we witness for the first time the untold chaotic history of the Universal Century, Casval and Artesia, Deikun's orphaned children, must face destinies just as tumultuous as the era itself.