In the Kyushu continent, the immortal way is flourishing, and people are proud to join the immortal sect. However, cracks in the boundary wall suddenly appeared, and demons from other worlds began to sneak into the Kyushu immortal sects. After the demons from other worlds sneaked into the major immortal sects, they tried to gradually take control of the immortal sects and attempted to subvert the Kyushu continent. Sword Immortal Mu Xun and his friends stopped the invasion of the demons, but unfortunately fell into the trap of the demons and were mistaken for traitors of the immortal sect. In order to find an opportunity and find clues about the lurking demons, Mu Xun decided to hide their traces and no longer show them to others, and handed his only son Dongfang Hao to his wife's clan for care. Dongfang Hao, who has the blood of the imperial family but not obvious spiritual roots, has always been regarded as a mediocre person by his own clan and has been bullied; he was originally a descendant of the sword immortal, but his father was framed by the demons and his life was rough. At the moment of crisis, he resolutely relied on unremitting efforts to turn danger into safety, and step by step walked towards the road of proving the way to immortality. In the Taichu Secret Realm, the capital of Zhaowu, Dongfang Hao stood up for his friends and saved them from danger many times. At the same time, Dongfang Hao never forgot to look for his missing father. Taming dragons, fighting for immortal souls, and constantly improving his cultivation, he was determined to find his father, reunite the major immortal sects, and drive the demons out of the Kyushu continent.