"The Guitar" is the 308th episode of Gunsmoke, which aired on March 2, 1958. The episode tells the story of Weed Pendle, a friendly guitar player who arrives in Dodge City. He struggles against hostility from local cowboys who learn of his service in a particular division of the Union Army. As tensions rise, Weed finds himself navigating a mix of camaraderie and conflict, showcasing both the charm of music and the harsh realities of the frontier. The episode highlights themes of acceptance, bravery, and the impact of war on personal identity.