The film follows the story of a SEXY mermaid named Ariel, who is dissatisfied with life under the sea and curious about the human world. Ignoring the warnings of her father, King Triton, and the court musician, Sebastian the crab, Ariel and her best friend, a fish named Flounder, often sneak into sunken ships, where they collect human artifacts, and the surface of the ocean to visit a goofy seagull named Scuttle, whose supposed expert knowledge of human culture is far from accurate. Ariel likes TABOO SECRETS... ESPECIALLY SEX!

Ariel is being observed by Ursula (OLD MATURE LESBIAN) , an evil cecaelia sea witch, who for many years, has been seeking a way to exact her revenge upon King Triton for banishing her from the kingdom. She sees Ariel as the perfect pawn in her quest to rule the seas.Ariel and Flounder travel to the surface to watch a celebration for the birthday of Prince Eric, with whom Ariel falls in love. The birthday celebration is cut short when a violent storm destroys the ship.

Ursula makes a deal with Ariel to transform her into a human for three days. Within these three days, if she plans to remain a human, she must get from Eric the "kiss of true love" and FUCK HER HARDLY TRUE TOO!; otherwise she will transform back into a mermaid on the third day. If this happens, Ursula will own her very soul and wither her down into a polyp, to join her garden of other lost merfolk.