Ariel is a young mermaid princess who lives under the sea in the kingdom of Atlantica. She is known for her beautiful voice and love of human objects that she collects from the surface world. Ariel's fascination with humans stems from her father King Triton's ban on all things related to them, which only fuels her curiosity. She often sneaks out of her grotto to watch humans at work and play.
Ariel's life takes a dramatic turn when she falls in love with Prince Eric, a handsome human who is sailing the seas. She rescues him from drowning after he gets lost on his ship, but they do not immediately interact. Later, Ariel makes contact with Eric through Ursula, a sea witch who has her own motives for getting involved with the mermaid princess.
Ariel's desire to be with Eric leads her to make a deal with Ursula, trading her voice for human legs. This transformation allows her to meet Eric in person, and they begin a romance on land. However, their love is threatened by Ursula's plan to use Ariel as a pawn in her plot to take over the throne of Atlantica.
As Ariel navigates her new life on land with Eric, she must also confront the consequences of her deal with Ursula. Her relationships with her father King Triton and her fish friends Flounder, Scuttle, and Sebastian are put to the test as well. The story culminates in a dramatic showdown between Ariel, Eric, and Ursula, where Ariel ultimately saves the day and finds true love with Prince Eric.
Through her journey, Ariel learns valuable lessons about the importance of following one's heart, being true to oneself, and the value of female empowerment. She also comes to understand that there is more to life than just living in a world beneath the sea.