In the action–comedy " Tropic Thunder ", Ben Stiller plays pampered action superstar Tugg Speedman, who is cast in the biggest, most expensive war movie ever produced. Speedman sets out to Southeast Asia with a "Who‘s Who" of celebrity co–stars. They include Kirk Lazarus ( Robert Downey Jr. ), an intense, three–time Oscar®–winning actor; Jeff Portnoy ( Jack Black ), star of the popular gross–out comedy franchise "The Fatties"; multi–platinum hip–hop–star–turned–entrepreneur–turned–actor Alpa Chino (Brandon T. Jackson); and first–timer Kevin Sandusky ( Jay Baruchel ). Soon after the production begins the actors are thrown into a real–life situation and are forced to become the fighting unit they‘re portraying, in order to find a way out of the jungle in one piece. A troupe of actors, under the impression they‘re making a Vietnam war movie, wanders dangerously in the jungle and is captured by a gang of druglords who think the actors are narcs. This movie is a send–up of Hollywood, actors, acting, agents, directors, writers, rappers, trailers and egos.