Master craftsmen from The Scarefactory in Columbus, Ohio survey the past to experience the most inventive devices and technologies ever created. In the series premiere, the Scarefactory's trek through history guides them to the macabre world of the Middle Ages. Chad explores the heinous mythology of one of the most infamous torture devices ever conceived, the Iron Maiden. Kermit brings his fabricating ingenuity to a lesser-known tool of medieval punishment, the Iron Boot, while Josh breaks away from the group to investigate Ancient China's early use of gunpowder with Rocket-propelled Fire Arrows.