OH MY MERMAID IS a story about a young mermaid who came to earth to know more about human and to fulfill her fantasy. The little mermaid gist earth only to be carried away by friendship, parental care and love. Shefellnin love with a hot human high school boy. Thera enemy finds out about her secret and sell her out to the whites for experiment. Richard who is her human crush gather two others and they all plan to travel out of Korea to save the helpless mermaid.