Xiu Niang, a kind-hearted farmer's wife, encounters a black snake searching for its child. Unable to bear seeing it suffer, she risks her life to save the little black snake, forging a bond of kindness with the creature. A snake catcher conspires with the villagers to repeatedly make things difficult for her and frame her, but the black snake never stops protecting Xiu Niang. It even steps forward to save villagers who have been poisoned, gradually dispelling everyone's prejudice. When a mountain flood strikes, the black snake sacrifices itself to become a bridge, saving the entire village, but is left gravely wounded and near death. To save the badly injured snake, Xiu Niang fearlessly climbs a dangerous cliff to gather a hundred-year-old spiritual lingzhi mushroom. This story reveals how all living beings remember kindness and repay loyalty, reminding people to always keep a kind heart.