In the year 12030 of the Immortal Calendar, there were two fifteen-year-old immortal apprentices, Fan Xiao and Hu Wanwan, in Dongxing City of the Yaxia Empire. Fan Xiao is a handsome young man who is pure, simple, affectionate and righteous, and finally achieves his dream of becoming an immortal. Hu Baiwan is a little fat man, shrewd in calculations, willing to sacrifice small things for big things, and unwilling to endure hardship in his cultivation of immortality. The two are good friends, and they were admitted to the best school for cultivating immortals in the Yaxia Empire together. On the road of cultivating immortality, the two had their differences, experienced countless adventures, and faced death several times. Lin Qing'er is a beautiful girl who falls in love with Fan Xiao at first sight, but Fan Xiao is obsessed with seeking immortality and treats her as if he were away from her. Hu Wanwan was passionate and infatuated, and Lin Qing'er chose Hu Wanwan in the end. Fan Xiao's sister, Fan Mo, stole the Immortal Sect's secret love-locking skill and was hunted by her fellow sect members along the way. Fan Xiao also started a journey of escape for her sister.