The Legend of Sword and Fairy 4 is an action role-playing game developed by Softstar Technology (Shanghai) Co., Ltd.. It is the fifth installment in The Legend of Sword and Fairy (or Chinese Paladin) video game series, and serves as a prequel to the third game. The game incorporates elements of wuxia, shenmo and fantasy.

Yun Tianhe (雲天河), a young man who had been living alone on a mountain peak, was on a regular boar hunting trip when he came across the young woman Han Lingsha (韓菱紗), from a clan of short-lived tomb raiders, attempting to break into his parents' tomb, culminating in the destruction of the tomb, and setting him on a journey alongside Lingsha to the outside world to uncover his parents' past. On the journey, they encountered and befriended the adopted daughter of the magistrate of Shouyang, Liu Mengli (柳梦璃), who seemed to have connections to Tianhe's father, and a skilled and kind swordmaster who trained at Mt. Kunlun's Qionghua School since a young age, Murong Ziying (慕容紫英).