Murong Liyue, the Demon Lord of Netherworld Abyss, was betrayed by his cronies and was rescued by the mysterious woman Xu Wanwan when he was about to die. This woman who always hugs a white cat and has a cinnabar mole in the corner of her eye actually wants him to stay with her as "Medicine Boy Li Yue" and be her apprentice.
He concealed his identity as the Demon Lord and learned how to weed and identify medicinal herbs in a mountain garden. However, he discovered that this seemingly gentle master hid too many secrets - she was a member of the civet family that could take human form, and her white cat "Snowball" had a sharper look than anyone else. Buried in her medicine garden were the tokens he smashed when he became a demon, and even his life-saving spiritual beads were inextricably linked to her.
When the Netherworld pursuers arrived, the heart-eroding formation enveloped the mountain top, and the sleeping ancient evil things broke out of the seal, Murong Liyue was shocked to realize: It turned out that the white cat he saved by the mountain stream when he was fourteen years old was actually the master who was protecting him now; it turned out that the spirit bead she gave him sealed half of her soul; it turned out that it was never an accident that she lived in seclusion here.
"Remember the snow beside the mountain stream, and next year... Remember to bring me mint."
A protection that spans several years, and the sincerity hidden in half a spirit bead. When the demon king's black wings spread out for the civet master, and when her cat claws are stained with blood for him, they will finally reveal the truth about the intertwined fate of each other in the shadow of the sword. It turns out that the so-called master and apprentice have always been a two-way redemption.
