Shen Yanci, the inkstone keeper of Cangwu Mountain, unexpectedly met Su Xuetang, the inheritor of the bloodline of the ancient gods. The two became connected through a mysterious soul exchange, and were involved in a catastrophe related to the survival of the three realms - the demon king was about to break through the ancient seal and slaughter all living beings.
In order to protect the Three Realms, Shen Yanci used the Light Chasing Sword as a blade, and Su Xuetang used the blood of the gods as a guide to awaken the power of the ancient artifacts "Snow-Smashing Inkstone" and "Ningshuang Inkstone". Together with partners such as the demon emperor Bai Ze, the human city lord Liu Changfeng, and the hot-blooded girl Liu Rumei, they have gone through life-and-death tests such as the illusion of the Heart-Eating Valley, the battle in Lin'an City, the stone grabbing from the Ten Thousand Demon Cave, the destruction of souls at the Demon Burial Platform, and the sealing of demons at the Gate of Chaos, and have repeatedly shattered the conspiracy of the Demon Lord and the rest of the "Dark Demon Palace".
From combining the two inkstones to seal the Demon King, to searching for the Snow Lotus Bead to extend his life, to clearing the Dark Demon Palace and preventing the resurrection of the ancient Demon God, the two adhered to their original aspirations in the blood and fire, and also developed a love that will last until death. In the end, they not only protected the peace of the three realms, but also passed on the spirit of "guarding together". Their son Shen Niantang became the new generation of guardian of the three realms. Their story also turned into an eternal legend, engraved in the snow and starlight of Cangwu Mountain.
