Gesicht, an advanced Europol robot detective, takes on a case in which both robots and humans turn up murdered with objects positioned near their heads like horns. As the trail points back to the world's seven most advanced robots, among them Mont Blanc, North No.2, Brando, Atom, and Gesicht himself, he races to identify the killer before another falls. Adapted by Naoki Urasawa from Osamu Tezuka's 'Greatest Robot on Earth' Astro Boy arc, this eight-episode Netflix ONA reworks that storyline as a noir mystery.