Godzilla vs. Mechagodzilla

An Okinawan prophecy appears to foretell Earth's destruction at the hands of Godzilla, only for the true Godzilla to reveal his doppelganger as a mechanical alien weapon.
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.