guiding the monsters using Action Signal Tapes, which broadcast a frequency that instructs them on what to do. The aliens plan to use their monsters to wipe out human civilisation.

Gengo Odaka, a freelance manga artist, inadvertently discovers one of the tapes after being hired by the Nebulans to produce concept art for the park. When the tape is played, the signal is heard by Godzilla and Anguirus