The forge heats up as the bladesmiths must use an age-old technique to create their signature weapons. But will their swords make the cut when the judges put them through a battery of tests? Two finalists head to their home forges to make one of history's most notorious weapons, the rapier, a sharply pointed sword that can kill with just one thrust.

The bladesmiths must forge a signature weapon using everyday steel objects like ball bearings and shovels as their only source material. One contestant puts finishing his weapon before his own safety in a heated race to the finish. Only two competitors will move on and are given just five days to forge the mystical Moro Kris Sword--a distinctive blade that dates all the way back to 300 BC.