Across Japan the Kuro Juujigun decimates its targets, killing all those who oppose them. Yet from the ashes of these destroyed bases, five young recruits miraculously survive and vow vengeance. Given a special interlocking "key", the various survivors are summoned to snackshop "Gon", secret gateway to EAGLE Japan's main command center by Japan's EAGLE Commander Edogawa Kenpachi. There they are given special formfitting electronic battlesuits, which empower its wearer with various superhuman abilities. Edogawa tells them that they are the Secret Squadron "Goranger", the world's best chance against the forces of the Kuro Juujigun. Armed with these battlesuits and other special weapons created by EAGLE scientists, they extract their revenge upon the Kuro Juujigun operatives who killed their comrades and dedicate themselves to crushing the remaining forces of the Kuro Juujigun and its sinister leader Kuro Juuji Soutou (Black Cross Fuhrer/Generalissimo).