Funnyman Ed Helms ("Vacation") pushes himself to the limit when he joins Bear Grylls high atop the Colorado Mountains. Admittedly fearful of heights, Helms comes face to face with sheer cliffs, crumbling rock and mountain-top perches where the bottom is nowhere in sight. As Bear puts him through the paces with a cringe-worthy dinner menu, Helms manages to conquer his limitations and discover a new side of himself. He also opens up about the trials and tribulations that lead him into a career in comedy.