Yu Xian is a young boy from Big Willow Tree Village who later becomes an outer disciple of the Baiyun Sect, the only direct disciple of the alchemy master Xiao Wusheng, and a cultivator with a wood-attributed spiritual root. After witnessing his mother being cruelly harmed by an evil cultivator, he repeatedly survives dangerous situations with the help of a mysterious jade pendant left behind by his mother. He becomes the disciple of Xiao Wusheng, an alchemy master of the Baiyun Sect, and reveals an extraordinary talent for alchemy. However, he is oppressed by powerful figures within the sect and punished by being sent to the perilous Heavenly Demon Valley. Growing stronger against all odds, he embarks on a path of revenge and the pursuit of the Dao.