Piloting a fighter jet as a member of the defense force protecting Earth, crew member En Ran is actually a giant heroine from space known as Fire Lady. Though she suffers attacks on her sole weakness—the Fire Timer located on her chest—she fights desperately through the pain and ultimately claims victory. However, the damage causes her to lose her giant form, leaving her vulnerable to a surprise assault by her long-time alien nemesis, Philonora, who has been lying in wait. Even after overcoming this crisis, Philonora's fury remains unchecked, and growing to giant size, he rampages through the city, provoking Fire Lady into battle. Just as Fire Lady prepares to bring their bitter rivalry to an end, the colossal destruction robot Metazorg appears and launches relentless attacks on her Fire Timer. Can Fire Lady emerge victorious in this final battle? What fate awaits Earth? [BAD END]