A boy from a poor family: Yun Zhan, a young fisherman, rescued the seriously injured "Iron Flute Scholar" Mo Wentian on the Hanjiang River. He accidentally got involved in a dispute between the rivers and lakes, and inherited the "Xuanmen Sword Classic".
Blood-Stained Master: Mo Wentian died of serious injuries. Before his death, he entrusted Yun Zhan with the Sword Sutra and the Iron Flute. Seven days later, the Black Lotus Sect killers massacred the fishing village. Yun Zhan narrowly escaped because he went out to sell fish.
First entry into the world: After Yun Zhan buried the whole village, he took the iron flute and the sword scripture to Qingzhou to look for the "Qingping Swordsman" Cheng Mian. On the way, he encountered the pursuers of the Black Lotus Sect and was rescued by the mysterious woman Qin Hongxiu.
Mystery of life experience: Qin Hongxiu recognized the origin of the iron flute and told Yun Zhan that his master Mo Wentian was once a disciple of the famous "Tianyin Pavilion", and the Black Lotus Sect is hunting down everyone related to Tianyin Pavilion.
The Mystery of the Sword Classic: Yun Zhan began to practice the Sword Classic under the guidance of Qin Hongxiu, and discovered that it contained secrets related to Tianyin Pavilion. The two decided to go to Qingzhou together to find Cheng Mian.