A mass vanishing phenomenon occurs among the human population. Rena and Shinjirou disappear together. Following these incidents, independent reporter Kotaro Higashi probes the perplexing 'vanishing case.' The extraterrestrials orchestrating it belong to the militant group Dark Star. They broadcast a warning to Earth"s inhabitants: 'Hand over half our planet, or sacrifice half its citizens… choose.' Simultaneously, the vanished Rena and Shinjirou are transported aboard Dark Star"s vessel circling Earth. As Kotaro uncovers more, he becomes entangled in the clash between Dark Star and the SSSP, nearly meeting a fatal end. In the climactic showdown, our protagonists confront the Golden Fortress. While this colossal mech devastates the metropolis, ULTRAMAN, SEVEN, and TARO are reinforced by ZOFFY, JACK, and ACE. Finally, the six ULTRAMAN champions unite! Their combined powers ignite hope, turning the tide against darkness. Together they vow to protect humanity from threat.
