Filmmaker Alejandro Jodorowsky discusses how he would have adapted Frank Herbert's classic sci-fi novel 'Dune' for the big screen. Through interviews with legends and luminaries including H.R. Giger, Gary Kurtz and Nicolas Winding Refn and an intimate and honest conversation with Jodorowsky, director Frank Pavich’s film finally unearths the full saga of ‘The Greatest Movie Never Made’.