The human girl Lin Li has known a butterfly demon named Shi Mu since she was a child. Shi Mu accompanies Lin Li all the way and can be said to be Lin Li's confidant. After years of getting along, the two are bound to each other. However, when Lin Li was eighteen years old, Shi Mu's enemies came to Lin Li in order to take revenge on Shi Mu, which caused earth-shaking changes in the fate of the two of them.
Purpose: Until death we do not change