For the 73rd class of cadets of the Defense University of the small planet Kibi, a maiden voyage on the new warship Amaterasu is a fitting event just before graduation. As they are returning home, however, they are shocked to hear news of a declaration of war by the aggressive Kingdom of Henrietta against Kibi. When the Kibi government surrenders without a struggle, the cadets decide to fight back using the Amaterasu, with funding from the Galaxy News Network. The only stipulation? Exclusive airing rights to the action and good ratings. So, the cadets find themselves the "stars" of their own reality show.

Tsubasa Shiina witnesses a UFO crash in the forest near her home. She rushes to the scene and there an alien lifeform fuses with her body to form the battle armor Figure 17.

With his mother dead and his father working abroad, Futami Nozomu returns alone to the town where he lived as a child, to attend high school and work at a local shrine. He soon finds himself caught up in a local legend of twin girls loving the same man.

A dream of falling from the sky...and then birth. Rakka is born from a large cocoon into the Old Home, greeted by a group of females with small wings on their backs and shining halos above their heads. Soon Rakka’s own wings grow, a halo is placed on her head and she is told that she must work in the nearby town of Grie. She soon realizes that the town and the entire world they live in are confined behind the Wall, a tall, impenetrable wall that none except the mysterious Toga are allowed to exit.