Ran Ruoling, the daughter of the innkeeper, came to Bai Yuxian Mountain to learn Taoism and practice immortality by chance. In the eyes of others, she was lazy by nature and had mediocre qualifications. Against everyone's expectations, she rose to the top of the mountain and became a disciple of Mo Yilan, becoming the third disciple of the number one person in the immortal world. Later, because he saved his fellow senior sister, he fell into the monster space that was sealed thousands of years ago, and met Jiu Yin who looked surprisingly similar to his master.