In 1917, a doctor from Kansas, dr. John Romulus Brinkley, announced he has discovered the cure for impotence, defending the testicular transplant from goats to men. Through animation, archive material, interviews and a very suspicious narra – tor, the documentary follows a path impregnated with fiction and expose a dual purpose: not only recover the biography of the controversial Brin – kley, but also to explorer the human credulity, the need to believe in seductive narratives. This necessity makes the human race susceptible to con artists, politicians, religious leaders and manipulators of all kind, including filmmakers. (It’s All True)