Episodes

Lieutenant Kei Katsuragi, a fighter pilot, receives a mission to protect a new untested bomb, the Space/Time oscillation bomb. During the mission the bomb goes off, and it produces a catastrophe. Twenty years later, the Emaan, a group of techno-gypsies find Kei unconscious and take him with them. Kei soon discovers he is in another dimension and that the Emaan aren't human.

Kei learns that the Emaan are the natural inhabitants of this world and that they are at war with the Terram, another race. He also learns that he cannot return home, because this world is surrounded by a dimensional barrier that can't be destroyed. Kei tries to penetrate the barrier with his Bronco 2 fighter plane but he fails and his ruined Bronco crashes to earth. Meanwhile, the Terram launch an attack on the Emaan, who retreat and hide in the woods.

Mimsy, one of the Emaans, finds Kei and brings him back to the others. He discovers that the Emaan fighter planes have an anti gravity control system which makes them easier to pilot. Kei asks the Emaan to fix his Bronco and also modify it to fly like their fighter planes. Meanwhile, the Terram supreme commander puts Olson in charge of recovering Kei from the Emaan.

Kei and Mome, a robot girl, decide to look around while the others are rebuilding his Bronco. They arrive in a Terram villaige, where Kai sees a man driving a jeep. The man says he got it from the Emaan, who were the ones who fixed it. On the way back to the market place, two Terram soldiers show up and try to capture Kei. Kei and Mome manage to escape, and race back to the caravan, where the modified Bronco is ready. What Kei doesn't know is that most of the actuators are not hooked up yet, and thus the Bronco cannot do anything else but fly. They take off and manage to get rid of the Terram soldiers. Later, they land in the village, but the villagers are not pleased thinking they will have problems with the Terram now.

The Emaan are welcomed by the villagers after they offer them some free goods. That night, at dinner, Jaby suggests that they rename the modified Bronco Orguss, after their god of war. Meanwhile, two villagers steal the Orguss. Kei leaves to search for it, and finds it in the woods, alongside two men. The younger one of them, Badei, explains to Kei that he only stole the Orguss to save his girlfriend Ereine, who is being held at a Terram base. Kei reluctantly accepts to help them rescue Ereine. Kei attacks the Terram base and manages to get the job done.

Jaby convinces Shaya to stop the Glomar, their caravan, to search for a valley where he believes they will find grapes, which is his favorite food. They arrive in the valley, where they find some huge grapes and decide to stop to harvest them and take them aboard the Glomar.