After returning victorious from his first journey to magical ruins, Lü Shu resumes his peaceful life with his adoptive sister, Lü Xiaoyu, while trying to avoid revealing his true power to Tian Luo Di Wang, the organization that enlists cultivators and protects the country from foreign threats.

However, the siblings' rest is short-lived, as new menaces from abroad creep from the shadows and threaten Lü Xiaoyu's upcoming expedition to the ruins. In the ensuing confrontation between rogue agents and a team led by the strongest B-Rank cultivator of the country, Lü Shu may have no choice but to show the world how strong he and Lü Xiaoyu have become.

(Source: MAL Rewrite)