From The Internet Movie Plane Database
Ben Stiller (Tugg Speedman)
Robert Downey, Jr (Kirk Lazarus)
Jack Black (Jeff Portnoy)
Brandon T. Jackson (Alpa Chino)
Jay Baruchel (Kevin Sandusky)
A group of high-profile actors are filming a war epic in the Asian jungle but not everything is running smoothly. As a result the director decides to take the actors to the real jungle but things turn more real than they could have imaginged and the actors find themselves acting for their lives.