What happens when two parents need their loving little daughter to fall asleep and have an afternoon nap, but she stubbornly refuses to, because still too bouncy and energetic to give up her playtime?

One of them is completely biased to his daughter and terribly loves to spoil her with fairytales, probably one of the best means to get her to sleep in the blink of an eye. Nothing strange with children, right?

But what happens when she's extremely fed up with her favorite fairytale and pleads her father to edit some little - maybe major - details so that she can enjoy the story even better?

And so...

...the little mermaid, princess of the sea, turns out into a little merman, whose voice still mesmerizes the prince. And though the prince stays a prince, he's not the charming knight wearing a shining armor ready to put his life at stake for the sake of his princess. He's just a normal guy kind of suffering depression because his life hasn't known love at all. Or...not yet.

Two different creatures will be able to overcome their differences and meet their fate? And will the little girl be satisfied with her fathers' fancy imagination?