A page suddenly goes blank in the Atlas of Mountains and Rivers, and Mount Cangwu loses its name. Only Qingyue, a young mountain god, still remembers it. The mountain paths fall into disorder, the valley waters can no longer be properly stored, and the earth's ley lines shift. Following the clues, Qingyue, Lanmei, Moheng, and Shiling investigate and discover that Mount Cangwu has not disappeared. Instead, after a hundred years without worshippers, it voluntarily surrendered its name. The group verifies that the mountain can still block the wind, part the clouds, and store water. They also uncover a flaw in the old rules of the atlas: they value incense offerings but ignore responsibility. To restore Mount Cangwu to the Atlas of Mountains and Rivers, they must rewrite the rules so that protecting others no longer means bearing the burden alone.