Chen Xiaoxiao, who has just graduated, embarks on a graduation trip with her best friends. Strange things happen frequently along the way, and black snakes follow them everywhere. She has had extraordinary eyesight since she was a child, able to see things invisible to others, and a vague memory from her childhood also emerged - she once unintentionally owed a favor to a mysterious being. The journey was strange and strange, and Chen Xiaoxiao was restless. At this moment, she received a call from her grandmother urging her to return to her hometown. Back home, Zhai Mohan, the thousand-year-old snake king, suddenly appeared. He was dressed in white and looked like a fairy, but he bluntly asked her to repay his kindness with her own body, help him survive the calamity of love, and preserve his cultivation to face the calamity of heaven. On the road to repaying a favor half-deliberately, one person and one monster accompany each other day and night, feelings arise secretly, and fate and love are entangled.
