Orphan Lin Xiaoluo's family was destitute with an empty rice jar, yet she saved a spiritual snake hit by an arrow in the back mountain. Coveting no gold or silver in the cave, she only carried the injured spiritual snake home to tend its wounds. Neighbor Zhao Daqiang shot the snake to steal its spiritual stone, contaminating the village well water, causing children high fevers and elders to be bedridden. Disregarding her own safety, Lin Xiaoluo used her essential blood as a guide and seven herbs to protect herself, narrowly escaping death to cleanse the village's water veins. She maintained her duty of not taking things that were not hers and safeguarded the life of an entire village. Good and evil ultimately receive their retribution, the greedy person was prosecuted by the law, and the white snake returned to the mountain, protecting her lifelong security.