The true story of Michael Jackson, from being the greatest pop star of all time to accusations related to his private life. The imprint he left on the world of music and entertainment is well known and evidenced by mind-boggling numbers, copies sold with the "Thriller" album, which turns out to be the best-selling record ever. From music to dance, from fashion to spectacle, he is certainly among the most influential artists. The documentary takes its name from a song, "Behind the Mask", and describes the man behind the mythological figure. Since the birth of the Jackson 5 he has always been talked about: his change of appearance and the many plastic surgeries have been the protagonists of countless debates and analyzes. The artist was accused of sexual harassment on a minor but was subsequently acquitted with full formula of the charges remained a stain on his underlying ambiguity.