Super Dimension Century Orguss

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.