It's hammer time in the forge when four smiths have to make knives out of 10 lb sledgehammers. After the blades are smashed and bashed in a brutal round of testing, the two surviving smiths return to their home forges to recreate another iconic pounder--the Polish War Hammer. In the end, only one smith will hammer out the competition to win $10,000 and the title of Forged in Fire Champion.