Kalmira was the leader of the Four Great Dark Titans thirty million years ago—a ruthless yet immensely powerful female warrior who harbored an intense obsession with Ultraman Tiga. After being sealed away in stony form by Tiga, who had turned to the light thirty million years ago, she drifted through the cosmos. When her seal was shattered, she reappeared before Kenzo Matsuoka and set her sights on the mysterious object known as the Eternal Core, which lay hidden on Earth—and thus began her relentless pursuit.