The City of Harryhausen, once the city of dreams, now ridden with crime; Godzilla, "The Father" rules the city with an iron fist. Zilla Jr. is an officer who spent many years trying to bring him down with little success. Now, a new drug is sweeping through Harryhausen's underground, giving an opening. Zilla has to track down the source before the City of 20,000 Skyscraper topples.