Xuan Lin is a green snake king who has been practicing for thousands of years. He is a three-foot-long green-scale giant snake. When he transforms into a human, he is a cold man with silver eyes and black hair. He lives deep in the mist-shrouded "Suolong Mountain" and guards the spiritual veins in the mountain. Because he was betrayed by humans a hundred years ago, he has great distrust of mortals. He has a withdrawn and reclusive temperament, but he hides his undiminished tenderness.
Ahe is an orphan girl from Qingxi Village at the foot of Suolong Mountain. Her parents died young and she grew up with her elderly grandmother. She is as tough as a weed, kind but not a virgin. She is familiar with the mountains, forests and vegetation, and can understand simple herbal diagrams. Because her grandmother is seriously ill, she has to go into the depths of Suolong Mountain where there is a legendary "big snake" to collect herbs.
The gap between humans and aliens, the truth of the betrayal a hundred years ago, the connection between the spiritual crisis and the survival of the village, Xuan Lin's thousand-year loneliness and Ahe's warm redemption.
