The Fantastic Four patrol the skies above New York in the Fantasticar when they spot a tank ramming into a bank and sucking out the money. They land and attempt to stop the tank from getting away, but find out that the tank was made of plastic and the whole event was a movie scene being filmed in the city. The movie's director, J.J. Collaso, is upset at the ruining of the scene for his movie masterpiece ""The Gigantic Vacuum Cleaner That Devoured New York"", and so Ben and Herbie volunteer to repair the props. Collaso then invites the Fantastic Four to star in an epic film to be called ""The Fantastic Four Battle The Flying Saucers From Outer Space"". With Collaso promising that their fees will go to charity, they agree to star in the film and go to Hollywood. At the studio, the team is unaware that the mysterious Phantom of Film City intends to ensure that the Four never leave the set. He has joined the movie by posing as its art director, Belmont. As the team begin filming, they are attacked by a giant robot prop designed by Belmont. They defeat the robot and go onto the next scene, which involves the Four boarding a flying saucer crewed by their old enemies, the Skrulls. The supposed prop takes off, and Belmont reveals himself to be a Skrull too, and together the Four have to stop their plans and return to the studio to finish their film.