Zhang Sheng, the son of a blacksmith, had an unexpected encounter and embarked on the path to immortality with a mysterious skill. From Laohuaishu Village to Xuantian Sect, he wields his sword to break through the mystery of his life experience and the sect's turmoil. He fights side by side with his partner Xiaocui, tempering his spiritual bones with the heart of forging swords, and in the pursuit of the Blood Demon Palace and the disputes in the secret realm, he uncovers the shocking secrets between immortals and demons.
