Godzilla vs. Mechagodzilla

According to an Okinawa legend, when a black mountain appears in the skies above the clouds, a monster will arrive and attempt to destroy the world. However, if this divination comes true, a red moon will set, two suns will arise (one being an optical illusion rising from the west), and two monsters will fight off evil to rescue the world. In a cave near the city, an engineer and an archaeologist uncover a statue of a strange lion-god creature, known as King Caesar. He is believed to be one of the monsters to fight for humankind in the prophecy. Later, a black mountain does appear in the sky. Godzilla then rises from a dormant volcano and starts on a rampage. Many people, however, do not believe Godzilla will be the monster to destroy Earth. That reflection is reinforced when Godzilla attacks Anguirus and nearly kills him. In a surprising turn of events, another Godzilla sets forth, only to discover that the rampant Godzilla is an impostor. Later revealed as MechaGodzilla, a robot of titanic proportions that was designed and created by ape-like aliens to destroy the original Godzilla. After Godzilla is beaten black and blue, he comes back, super charged with electricity, gathered from a lightning storm on Monster Island. With the help of the newly summoned King Ceaser, Godzilla destroys MechaGodzilla and returns back to the sea.