In 1598, a new county magistrate in a small county in Korea, after a storm, Yang got Yang bought a mermaid, and Yang wanted to extract fish oil from the mermaid, because it is said that the fish oil of the mermaid would not go bad after being left for many years. After the county magistrate found out, he released the mermaid back to the sea, which made Yang hold a grudge.
In 2016, Junjae was a gang of high-intelligence thieves who completed a big ticket After resting abroad, he met the mermaid lady who had turned into a human here, and brought her back to Korea by chance. The two experienced ironic stories and named her Shen Qing. Yang was still a bad person in this life, he wanted to get the mermaid, and in the end Shen Qing was injured in order to protect Junjae, so he had to go back to the sea to heal. At the time of parting, she erased Jun Jae's memory, but he who has fallen in love with Shen Qing deeply cannot forget it. Three years later, Junzai turned his prodigal son back and became a prosecutor, and Shen Qing also went ashore and became pregnant with his child. The two lived an ordinary and happy life.