The plot revolves around a little mermaid who lives at the bottom of the ocean. The main character is obsessed with the dream of having two tails, which would allow her to dance like humans! She is drawn to everything related to the human race. The little mermaid's father, King Triton, is always angry with his daughter when he notices her constant desire to understand the human world. The wicked and powerful sea ruler worries about his only heir, as a connection with humans could be dangerous for her...