Allison, The Little Mermaid

This is the story of a little mermaid named Allison, who dreams of going on land. When her father, King Lester Triton, forbids her to go on land, Allison visits the sea witch, DeMonica. Even though she helps her get to land and have the human boy she fell for like her back, what Allison doesn't know is that DeMonica has plans to destroy her to get revenge on her father.