The sky collapsed, ancient beasts burst out of the seal, and the world became purgatory. The surviving humans deciphered the ancient secrets from the oracle bone fragments, used the bones of alien beasts as the frame, the star sand as the armor, and the spiritual veins as the guide to create mysterious armor and start the battle over the mountains and seas.
Xuanjia master Lin Ye is obsessed with tempering Qingluan armor. In the flames of war, he meets Chu Yan, a talented inscription master. The two use the "Book of Mountains and Seas" as their blades to fight side by side against the attacks of Taotie, Qiongqi and other ferocious beasts. From the Chang'an underground forge to the Guixu abyss, from the bloody battle in Kunlun Ruins to the search for secrets on the top of Wushan Mountain, they join hands with Yinglong Guardian and Qilin Contract Master Ari to gather the power of the mountains and seas to resist the devouring conspiracy of the demon from outside the territory.
Sacrifice with the remaining soul, seal the boundary with Hongmeng, and establish the heart with loyalty. When the light of the mysterious armor intersects with the roar of the alien beasts, and when the oaths of sacrifice and protection resound throughout the Kyushu, human beings and the alien beasts finally form an alliance and jointly compose the legendary epic of "the mysterious armor is here, the mountains and the sea are peaceful".
