Lin Xiaodong discovered that his father behaved strangely, like fishing and releasing wild animals, and bathing in mud. Netizens reminded him that it was related to mermaids. He learned that in order to save him, his father used mermaid blood to ward off disasters, and he himself was cursed and alienated. Lin Xiaodong pretended to seek help from Taoist priests Lin Ying and Chen Xin, and used their greed to set up a trap. Lin Ying swallowed the mermaid and helped his father to be reborn. His parents were able to get rid of the curse, and the protagonist also protected his family.