Tachikawa, Japan, is a "second metropolis" of Tokyo, protected by the Gatchaman, warriors who fight in special reinforced suits powered by the manifestation of their spiritual powers called NOTE. When the energetic and cheerful Hajime Ichinose becomes their newest member, the Gatchaman must deal with Berg Katze, an enigmatic alien creature bent on destroying Earth just like it did with several other planets in the past.