Francis Ford Coppola on Thursday premiered his self-financed opus “Megalopolis” at the Cannes Film Festival, unveiling a wildly ambitious passion project the 85-year-old director has been pondering for decades.

No debut was awaited with more curiosity in Cannes than “Megalopolis,” which Coppola poured $120 million of his own money into after selling off a portion of his wine estate. Not unlike Coppola’s “Apocalypse Now” some 45 years ago, “Megalopolis” arrived trailed by rumors of production turmoil and doubt over its potential appeal.

What You Need To Know

  • Francis Ford Coppola premiered "Megalopolis" in Cannes on Thursday

  • The director spent $120 million of his own money on the project after selling a portion of his wine estate

  • What Coppola unveiled defies easy categorization

  • It’s a fable set in a futuristic New York about an architect who has a grand vision of a more harmonious metropolis, and possesses considerable talents including the ability to start and stop time

What Coppola unveiled defies easy categorization. It’s a fable set in a futuristic New York about an architect (Adam Driver) who has a grand vision of a more harmonious metropolis, and whose considerable talents include the ability to start and stop time. Though “Megalopolis” is set in a near-future, it’s fashioned as a Roman epic. Driver’s character is named Cesar and the film’s New York includes a modern Coliseum.

The cast includes Aubrey Plaza as an ambitious TV journalist named Wow Platinum, Giancarlo Esposito as the mayor, Laurence Fishburne as Cesar’s driver (and the film’s narrator) and Shia LaBeouf as an unpleasant cousin named Claudio.

The film is dedicated to Eleanor Coppola, the director’s wife who died last month.

Coppola, wearing a straw hat and holding a cane, walked the Cannes carpet Thursday, often clinging to the arm of his granddaughter, Romy Coppola Mars, while the soundtrack to “The Godfather” played over festival loudspeakers. Inside the theater, Coppola waved his hat and shouted “Thank you!” as the crowd stood applauding him for several minutes. Among the attendees were Richard Gere, Cannes jury president Greta Gerwig and Abel Ferrara.

Coppola is seeking a distributor for “Megalopolis.” Ahead of its premiere, the film was acquired for some European territories. Richard Gelfond, IMAX’s chief executive, said “Megalopolis” — which Coppola believes is best viewed on IMAX — will play globally on the company’s large-format screens.

In numerous places in “Megalopolis,” Coppola, who once penned the book “Live Cinema and its Techniques,” experimentally pushes against filmmaking convention. At a screening Thursday, Jason Schwartzman emerged mid-film, walked across the stage to a microphone and posed a question to Driver’s character on the screen above.

Several weeks ahead of Cannes, Coppola privately screened “Megalopolis” in Los Angeles. Word quickly filtered out that many were befuddled by the experimental film they had just watched. "There are zero commercial prospects and good for him,” one attendee told Puck.