Come with me into the world of the sea and meet Ariel, the mermaid. Wouldn't it be a dream to be able to swim like her? But, I'll tell you something: Ariel is very unhappy with her life under the water. She would like to lead a life as a human because she believes that the human world is happier. So, she spends her time yearning to be like the people and collecting their things. She wants to swim to the surface of the ocean so badly, but her father does not allow her to do so. Because she feels irresistibly drawn to the human world, she experiences all kinds of adventures.