Loosely inspired by the director’s reading about the Catilinarian Conspiracy which took place in 63 BC, the movie is a Roman Epic fable set in an imagined Modern America. The City of New Rome must change, causing conflict between Cesar Catilina, a genius artist who seeks to leap into a utopian, idealistic future, and his opposition, Mayor Franklyn Cicero, who remains committed to a regressive status quo, perpetuating greed, special interests, and partisan warfare. Torn between them is socialite Julia Cicero, the mayor’s daughter, whose love for Cesar has divided her loyalties, forcing her to discover what she truly believes humanity deserves.
"My first goal always is to make a film with all my heart, so I began to realize it would be about love and loyalty in every aspect of human life. Megalopolis echoed these sentiments, in which love was expressed in almost crystalline complexity, our planet in danger and our human family almost in an act of suicide, until becoming a very optimistic film that has faith in the human being to possess the genius to heal any problem put before us." (Francis Ford Coppola)