While the rich are funding Mussolini's war efforts by purchasing ill-gotten masterpieces from fascist Margherita Sarfatti (Susan Sarandon), the poor, like Olive Stanton (Emily Watson), are singing on the street for a nickel. In an unlikely partnership, Nelson Rockefeller (John Cusack) commissions anti-capitalism artist Diego Rivera (Ruben Blades) to paint a mural. Meanwhile, Mark Blitzstein (Hank Azaria) is inspired to write a pro-union musical that is closed before it opens when Congress begins to investigate the Federal Theater Project. Based on actual events in the 1930s, writer-director Tim Robbins boldly tackles politics, the arts, and a cultural revolution.