'Wait.' the royal mermaid argued. 'That is such a short span of time. How will that allow me to have true love?' 'It is not too short,' the sea witch whispered to him. 'I have seen what you can do,' Suffocating in his father King Jay's vast undersea realm, the young and rebellious mermaid prince, Ni-ki, yearns for a new life above water, on the unexplored dry land. Hopelessly head over heels for the charming mortal prince, Sunoo, desperate Ni-ki summons up his courage to come to an ill-advised arrangement with the ocean's cunning and terrible sea-witch, Sunghoon, in high hopes of winning his heart. However, Ni-ki has only three days to succeed. Will he see his wish come true?