The Little Mermaid (1989)

This is the story of a little mermaid named Ariel, who dreams of going on land. When her father, King Triton, Forbids her to go on land, Ariel visits Ursula who her father had banished. Eventhough she helps her get to land, what Ariel doesn't know is that Ursula has plans to destroy her to get revenge on her father.