A remake of episodes 51-52 of the TV version.

This short movie is a remake of the first half of episode 3 of Ginga Tetsudou 999.

In the latter half of 21st century, humans leave the Earth and begin to live in space. In order to adapt to the environment in space and deal with the hostile aliens in Jupiter, genetically engineered children called Princes are artificially raised and trained to be pilots of armed robots AHSMB (Advanced High Standard Multipurpose Battle Device). This is a story about one of the teenage Princes, Hitachi O Izuru, who studies in an academic city Grandzehle. (Source: MAL News)

Rai is a space opera that fuses feudal Chinese and Japanese customs with vast galaxy spanning empires and space-going societies. The story follows the life and times of the samurai Rai, and the quest of several spacefaring factions for control of territory and, of course, the Empire.