Avant-garde geniuses or the world’s longest-running rock novelty act? For those not previously converted or exposed, Theory of Obscurity will leave that big question hanging. A film that explores the renegade sound-and-video collective known as the Residents. A career which spans 40 years and is clouded in mystery. Many details surrounding the group are secret, including the identities of its members. They always perform wearing masks and costumes, which is part of their magic.