It is very seldom that a mermaid is born during a full moon. So it was believed that Yurena would bring misfortune to her race. One day, an oil spill from an oil tanker spread all over the ocean and killed many mermaids and other sea creatures. This event can be considered a catastrophe and is called a bad omen or misfortune brought by Yurena according to their old belief.
Yurena was blamed for that incident and their race united to send her to earth to retaliate and kill the man who owned the ship who spread the chemical in their home under the sea. Here, she will meet the handsome billionaire Mao Ferragamo and fall in love with him.
This will bring confusion in Yurena's mind, what is more important? Her mission or her happiness?
