Casual cultivator Gu Yun'er once saved Xie Yuzheng, the proud son of heaven of the Qingfeng Sect, and the two betrothed. However, to save the injured junior sister Shen Yuanyuan, Xie Yuzheng actually united the entire sect to coerce Gu Yun'er into offering her water spiritual root. Gu Yun'er coaxed the entire sect into signing a life-and-death contract, stipulating that as long as she committed no fault, the sect must protect her safely. After losing her spiritual root, Gu Yun'er was accused at the sect grand competition of stealing the sword sect's supreme treasure. Major sects besieged the Qingfeng Sect, and the Qingfeng Sect was forced to protect Gu Yun'er to the death because of the life-and-death contract. In the end, Gu Yun'er reclaimed her spiritual root and punished the wicked, meeting true love and living happily.