Su Mu is a handyman who chops firewood at the bottom of Ruimu Cliff. His spiritual root is "no spiritual root" and everyone can step on him.
Until he split open an old tree that had been struck by lightning for three hundred years, and dug out a piece of cursed lightning-strike wood from the heart of the tree - in the wood lived the ancient ancestor Yun Ji who failed to ascend and only had a residual soul left.
"If you want to survive, become a disciple."
"Okay, lend me some spiritual stones first."
One wants to rebuild with his apprenticeship, and the other just wants to make a fortune selling wood. Little did he know that what was hidden in this "waste"'s body was the Heavenly Thunder spirit body that had not appeared in three hundred years, and it specialized in eating Heavenly Thunder. The master and the apprentice, one talkative and the other venomous, went all the way from the yard to the competition ring.
It's just that they don't know that the truth about the ascension three hundred years ago is waiting to dig out the wood by the roots.