Debut feature director Jay Berman (Christopher Guest), steers cast and crew through a typically tumultuous independent film Home for Purim, an intimate period drama about a Jewish family's turbulent reunion on the occasion of the dying matriarch's favorite holiday. When Internet-generated rumors begin circulating that three of Purim's stars -- faded luminary Marilyn Hack (Catherine O'Hara), journeyman actor and former hot dog pitchman Victor Allan Miller (Harry Shearer), and ingenue Callie Webb (Parker Posey) -- may be perpetrating Award-worthy performances, a rumble of excitement rattles the cast. Once "Hollywood Now" anchors Chuck Porter (Fred Willard) and Cindy Martin (Jane Lynch) pick up the buzz, Award fever infects the entire production. Unit publicist Corey Taft (John Michael Higgins), talent agent Morley Orfkin (Eugene Levy), and producer Whitney Taylor Brown (Jennifer Coolidge) all smell the sudden potential for a sleeper hit. As does Sunfish Classics President Martin Gibb (Ricky Gervais), who suggests some last-minute changes to the film that he feels will broaden the film's appeal. Meanwhile, Purim's screenwriters, Lane Iverson (Michael McKean) and Philip Koontz (Bob Balaban) grow steadily more horrified as they watch the first film adaptation of their work diverge from their original story.