Xiao He, a farm girl, spends all her money to save a red spirit snake that guards a spring. In return, she receives spiritual herbs with healing powers. Her greedy cousin conspires with a medicine merchant to steal the treasure and recklessly damages the mountain's water veins, causing the village's wells to run dry. Xiao He and the red snake bravely step forward, joining forces with the villagers to reclaim the spiritual treasure, restore the water veins, and protect their home. Those who committed evil deeds receive the punishment they deserve.