2. The play tells a series of stories about the mermaid who is on the verge of extinction on the earth and adapts to land life after meeting a talented liar in the city.
3. 1598, in Shegu County, gangwon, a county magistrate named Jin Yongling () lived in Yang Haibin's home, and Yang took him to see the mermaid he caught (). Yongling asked Yang what he was going to do to catch the mermaid. Yang said that the fish oil extracted from mermaid has an excellent appearance and will not rot even if it is left for many years, but it is a good oil and will be rancid once it ages. Yan Ling felt very sorry. He took the mermaid back from Yang and put it back into the sea.
4.20 16 Just like human beings will encounter traffic accidents even if they don't want to, the mermaid came to land after the accident and met the first human on land. The first man was Xu Junzai (Lee MinHo), but the mermaid who soon returned to the sea had deep thoughts. In order to keep her promise to meet the man again, she returned to land and came to Seoul again. In the mermaid world, she is the most aloof and Leng Yan incomparable, while in the human world, in the eyes of Junzai, she is just an edible fool. This ignorant woman knows nothing about the world. She believed what Junzai said and even learned about the world through him. Unconsciously, he began to feel guilty for cheating the woman. These two people, who can never coexist, began an intimate, hot and tearful love story.