Dam Soo-Cheon, commonly known by his epithet Lone Star of the Cerulean Sky, is a martial master and the current family head of the Valley of No Return and a member of the Seven Lesser Heavens. He is the third son of Dam Jeok-Shim, a member of the Nine Skies. He, along with Seo-Moon Hye Ryung and Shim Won-Lee, created the Cerulean Dragon Society in order to allow young martial artists a great voice within the affairs of Murim.