Godzilla vs. Gigan

The aliens assume the forms of dead humans and work as the development staff of a peace-themed theme park, World Children's Land. The aliens plan to use the space monsters Gigan and King Ghidorah to wipe out human civilization. Manga artist Gengo Kotaka stumbles onto their plan after being hired as a concept artist for the park. When he and his friends accidentally obtain one of the Action Signal Tapes and play it, Godzilla and Anguirus realize something is amiss.