Qin Guan, an eighth-realm martial artist, descends the mountain on his master's orders to fulfill a marriage promise, only to be rejected and have the engagement broken off. In the end, he marries Nan Rou, a critically ill young lady who was substituted as the bride. Everyone laughs at him as a useless man without a dantian, unaware that he is an invincible, max-level powerhouse with an unmatched physical body who secretly awakens a Chaos Body and cultivates both swordsmanship and martial arts. He heals his beloved wife and helps her awaken the Taiyin Sacred Body. When challenged by noble heirs, hunted by the Spirit Sword Academy, confronted by the arrival of the Saber Saint of Zhongzhou, and threatened by the imperial authority of the Longyun Empire, Qin Guan responds by smashing every obstacle with his iron fists! Whether you are a Sword Emperor, a Saber Saint, or the supreme ruler, anyone who dares to provoke my wife will be reduced to ashes! Watch as this invincible martial artist protects his wife on a wild ride, accompanied by an arrogant black tower and a cunning divine dog.