Hearing that his village is being threatened by a warlord and his gang, Merlin travels home with Gwen and Morgana to help. Arthur joins them and does his best to drill the peaceful villagers into a fighting force, but Merlin's friend William dismisses him as an egotist. Gwen calls Arthur out on his insensitivity to the villagers' humble ways and also fights for the women's right to fight. But when it comes to the fight, the villagers are still inexperienced and Merlin risks exposing himself as sorcerer to drive off the invaders. During the battle, Merlin conjures up a storm to drive off the invaders, which Arthur sees. During the ensuing battle, William saves Arthur's life, and takes the blame for the magic storm. Arthur pardons William on his (William's) death bed.