A dimensional explosion transports Kei and his Bronco II variable fighter to a severely damaged future. There he is pursued for unknown reasons by the militaristic Chilam and aided by the Gypsie-like Emaan. Both sides have some unknown interest in Kei, referring to him as a . Originally translated by US Renditions as "Differentiated Idioblast", it is more properly translated as "Singularity". In the "ImaginAsian" version, it has been translated as an "Idiosyncratic Point". After Kei's Bronco II is damaged during a fight the Emaan modify it into the "Orguss", the eponymous mecha from the series, which was later adopted and mass-produced as the Orguss II.