The Little Mermaid follows a young mermaid named Ariel who dreams of living on land. She makes a deal with the sea witch Ursula to become human in exchange for her voice. Ariel must make Prince Eric fall in love with her within three days, or she will belong to Ursula forever. With the help of her friends Flounder and Sebastian, Ariel navigates the challenges of life on land while Ursula tries to sabotage her chances. Ultimately, Ariel must choose between her love for Prince Eric and her life under the sea.