After Li Jun, a sickly scholar, traveled through time, he only wanted to protect his sister and prepare for the exam. On a rainy night, he encountered a black dragon asking for a seal, and helped him transform into a dragon and obtain the "True Law of Black Water" to embark on the path to immortality. Because the clan seized the land and forced his sister to get married, Li Jun broke up with him and severely attacked his clan members, which led to the county government chief retaliating, all of which were resolved with magical methods. On the way to slaying demons, he met Gu Yan and Gu Xitang, and his reputation for cultivation gradually grew, but he formed a mortal enemy with Bai Zihua, the leader of the East Sea Demon Alliance. Li Jun of the Yuntai Prefecture Poetry Society became famous all over the world for his poems. Bai Zihua immediately led the demons to surround Woniu Village. In order to protect his relatives and his hometown, Li Jun stood up to fight against the demon enemies.
