The mysterious "youngster" Hua Yinzi, who just came out of the martial arts world, met the cheerful young swordsman Xiao Yanxi and the gentle medical sage Du Yinxiao, and the three of them went north together to participate in the martial arts conference. On the way, they encountered unexpected dangers: the beautiful troll flower, the mutated two-headed candle snake... These turned out to be secretly obstructed by the Moon Worshiping Cult of the Southern Region Wujiang. Finally arriving at the location of the martial arts conference, I learned through Yan Qi, the aide of Qiu Yuanzhi, the leader of the martial arts alliance: the "Moon-Drinking Sword", the treasure of the world that had disappeared for many years, had reappeared in Duanyan Villa in the far north. Hua Yinzi seems to be very obsessed with this sword and has deep faith in Yan Qi; Du Yinxiao seems to have an unknown grudge and grudge with Mu Hongwan, the saint of the Moon Worship Sect. The various forces of the Wulin Alliance and the Moon Worship Sect, led by an invisible hand, gradually converged on the Duanyan Villa where the legendary demons were entrenched. The owner of Duanyan Villa, Han Cangfei, who is called the Demon Lord, and the four guardians in the village are intertwined with Hua Yinzi's fate.