Qin Guan, a martial artist in the Eighth Realm, went down the mountain in order to practice swordsmanship and martial arts, and followed his master's orders to join the Nan family as his son-in-law. The Nan family mistakenly thought that he was a waste, so the stepmother married the critically ill eldest daughter Nan Rou to him instead of her own daughter. Unexpectedly, Qin Guan's military power swept across Qingzhou, not only curing Nanrou, but also helping the Nan family become the number one family in Luyun City, severely slapping everyone in the face. In the Secret Realm of Ten Thousand Demons, he received a heaven-defying inheritance and became a rare genius in swordsmanship and martial arts in a century. He also became an invincible swordsmanship master without Dantian. In the end, Qin Guan, Nanrou and his confidante explore the way of heaven and step into a wider world.
