For four decades now, the punk avant-garde band The Residents has been tickling conventions with brilliant videoclips, incredible performances and a taste for the bizarre and the strange. But who's hiding behind the costumes of the group ? The mystery remains. For their anniversary tour, Don Hardy (The Human Experiment, Love Hate Love) has followed the band and even some of their fans to hear about their craziest theories on the identity of the musicians. Through the meeting of the most ardent admirers, Theory of Obscurity really appears as the musical equivalent of the fetishist Room 237 and of his Kubrickian conspiracies.