A new set of bladesmiths are tasked with the grueling challenge of shaping four very different types of metal, each with their own unique difficulties, into a fully functional deadly weapon. After a rigorous round of testing, only two will survive. They'll have just five days to create one of the most lethal weapons in military history, the Nepalese Kukri. They'll then go to battle in a final round of testing, but only one will conquer all and secure the title of Forged in Fire champion.