The drama is based on the legend of Shegu County Magistrate Kim Dan ling (played by Lee Min ho) releasing a mermaid caught by fishermen to the sea in the earliest folk story collection in South Korea, "Yu Yetan.". Tells the story of Shen Qing, a mermaid who came to the city hundreds of years later on the brink of extinction (played by Jeon Ji hyun), adapting to land life and the genius scammer Xu Junzai (played by Lee Min ho)
The drama is based on the legend of Shegu County Magistrate Kim Dan ling (played by Lee Min ho) releasing a mermaid caught by fishermen to the sea in the earliest folk story collection in South Korea, "Yu Yetan.". Tells the story of Shen Qing, a mermaid who came to the city hundreds of years later on the brink of extinction (played by Jeon Ji hyun), adapting to land life and the genius scammer Xu Junzai (played by Lee Min ho)