Genius musician Kyoransky's conducting stick is conducting the music of Lupin's death. Those who hear the performance attack him. Lupin's target is also that diamond-studded conducting stick. Pretending to be a cameraman, Lupin records the orchestra on video, analyzes the orchestra recording, and solves the mystery: it's hypnosis, manifest through sound waves beyond the range of human hearing. When the moment of the showdown approaches, Lupin wields a soup ladle full of holes in his hand?!