U.C. 0097, one year after the opening of Laplace's Box. Despite the revelation of the Universal Century Charter that acknowledges the existence and rights of Newtypes, the framework of the world has not been greatly altered. The conflict later dubbed the Laplace Incident is thought to have ended with the downfall of the Neo Zeon remnants known as the Sleeves. In its final battle, two full psycho-frame mobile suits displayed power beyond human understanding. The white unicorn and the black lion were sealed away to remove this danger from people's consciousness, and they should now be completely forgotten. However, the RX-0 Unicorn Gundam 03, which disappeared two years earlier, is now about to show itself in the Earth Sphere once more. A golden phoenix... named Phenex. (Source: Gundam.info)

It consists of two parts: 1. The Storm-Calling School Festival - Char and Haman host a festival to celebrate the union between the Nu School for Boys and the Zeta School for Girls. But all hell breaks loose when the Counterattack School gang - led by Amuro, Judau and Kamille - rush in to crash the party. 2. The Tale of the SD Warring States: The Chapter of the Violent Final Sky Castle - Set in the fictional land of Ark, SD Sengokuden re-imagines the mobile suits and mobile armors of the existing and more serious Gundam stories as super deformed sentient samurai in a setting reminiscent of ancient Japan. (Source: Gundam Wiki)

Final of three remastered Zeta Gundam compilation movies. (Source: AniDB)

Short ONA episodes streamed on the TV Tokyo's and Bandai's official websites.