An Okinawan prophecy that foretells the destruction of the Earth is seeming fulfilled when Godzilla emerges to return to his destructive roots. But not all is what it seems after Godzilla breaks his ally Anguirus's jaw. Matters are further complicated when a second Godzilla emerges, revealing the doppelgänger as a mechanical weapon.

A theatrical release of The Return of Ultraman episodes 13-14. It was released on December 12, 1971 as part of the Toho Champion Festival along with Godzilla, Mothra, King Ghidorah: Earth's Greatest Battle (edited from Ghidorah, the Three-Headed Monster) and shorter versions of The Adventures of Hutch the Honeybee, and The Little Match Girl.

Spectreman, on an assignment from the Overlord, assumes the earth name 'George' and starts working the Pollution Research & Control Squad. Dr. Gori quickly creates 'Hedron' out of the earth to pollute & attack the earth cities. In a vicious battle, Spectreman defeats Hedron, the gas breathing monster. But - the evil genius Dr. Gori revives Hedron and it continues its attacks on earth. A young boy discovers Spectreman's secret identity and helps Spectreman to regain his strength and defeat Hedron once and for all!