In the turbulent Five Dynasties and Ten Kingdoms period, war rages across the land and the martial world is awash in bloodshed. Chu Shiying, leader of the Moonshadow Sect, rules the martial world with the Moonshadow Divine Art, only to be killed by a traitor overnight. His daughter, Chu Yuhuan, flees with the secret manual, vowing to avenge her family. Ling Xiaotian, a Qingcheng disciple of ordinary talent but a chivalrous heart, is drawn into the conflict and joins his senior sister, Qing Ningshuang, in defending Qingcheng. The Tianshan hypocrite Duan Tianying conspires with Northern Han to seize the divine art and rule the martial world. Heroes from the six great sects gather at Wudang, and a clash between the martial world and the imperial court is about to erupt. Beneath a blood-red crescent moon, swords gleam like frost beneath the clouds. As old grudges and tangled loyalties collide, what place is left for chivalry? Thus begins a bold and tragic wuxia legend.