The forge heats up as our four bladesmiths struggle create a special Japanese hardening technique on their signature blades. After a difficult first round of testing, the remaining two bladesmiths head home with just five days to forge the legendary Crusader Sword. With their battle-ready weapons in hand, they're put through a brutal round of medieval testing; but only one can emerge victorious and be crown the Forged in Fire champion.

After a hard round of tests that literally breaks a blade in two, the finalists get the chance to make one of the most important weapons from history, the Roman Gladius.