Voir sur FrenchStream. Unknown Language is an investigation into our unconscious and all the social vulnerability it brings. The documentary features 15 interviewees, including musicians Marcelo Yuka and Otto, actor and comedian Gregório Duvivier, artist Eduardo Marinho, writer and cartoonist Lourenço Mutarelli, psychologist and hypnologist Gilda Moura, and psychoanalyst Pedro de Santi.