Gu Lengxi ignored the opposition of her family and spent all her savings to buy a dying mermaid. She knew that the mermaid was from the royal family of the deep sea and could help her achieve immortality. She took careful care of her, and the mermaid eventually transformed into a golden mermaid and transformed into a human form. Although Gu Lengxi was moved, he couldn't bear to do it directly. The news that the golden mermaid appeared shocked the whole city. Gu Lengxi was worried. He learned that the soul compatibility with his soul must reach 70% for it to take effect, and the two of them only had 10%. She began to deliberately develop a relationship with the mermaid, but her sister Gu Qianqian also had plans after learning that the mermaid had transformed.
