Ariel is a fun-loving and mischievous mermaid who is enchanted with all things human. Disregarding her father's order to stay away from the world above the sea, she swims to the surface and, in a raging storm, rescues Prince Eric, the man of her dreams. Determined to be human, she strikes a bargain with the devious sea witch, Ursula, and trades her fins and beautiful voice for legs. With her best friend Flounder, and her reluctant chaperon Sebastian...

Jacob's wish to find a way to make big sister Marfa be nicer to him appears to be answered when he finds an ancient book of magic. In the book, Jacob finds a spell that should do the trick. The spell does bring about some amazing changes in Marfa, but none of them are very good. Jacob frantically tries to change her back to the way she was before his parents find out their eldest daughter has turned into a goat.