A female green snake named Honghong was sent by the female snake king Huaqing Snake to the Taohua Mountain of Penglai Wonderland to find a beautiful man for the female snake king to practice the snake immortal method. The black-faced thunder god stopped her in the sky and asked her to abandon evil and do good. She was afraid of the majesty of the female snake king's palace rules and did not dare to obey. The black-faced thunder god wanted to strike her with lightning, but she was later rescued by Pangu King Hongmeng Taoist Lord. Because she had an unfinished relationship in the human world, he sent her to the human world to end the marriage so that she could concentrate on practicing Xuantian Taoism. There is human love, love between gods in heaven, alien love, and the hardships of the mistress, the little snake demon Honghong, in her arduous cultivation of immortality.