Everyone thought Shi Yunyin was just a weak little mermaid, but they didn't know that she had long since honed her skills in adversity. Three years later, she returned with a secret, searching for the truth of her life experience while matching wits and courage with Ou Zun, the person in power of the Ou family. Repeated pursuits and escaping danger side by side made two people who refused to yield to each other gradually develop an attachment. But the old secrets of the Ou family, the mermaid bloodline, and layer upon layer of conspiracy emerged one after another; when the possibility of a new life quietly arrived, should she choose to go far away, or protect the future together with him?