Godzilla Junior, Mothra, King Ghidorah: the Guardians of ecosystem

After the events of the previous film, people are revolting, they want to destroy all the Kaiju, they are tired of living in fear, the government decides to play along, because of this King Ghidorah awakens, who has been sleeping for millions of years, Mothra and Godzilla Jr. manage to calm him down, but a new threat falls from the sky, the metal alien kaiju Gigan!