The Toons travelled to swim underwater and met the beautiful mermaid named Ariel, who wishes to be in the world above where the humans live. But her father, King Triton who has hatred towards the humans and forbids her to go out of the ocean. The Toons decided to help Ariel to fulfilled her dreams along with Ariel's friends, Scuttle the seagull, Flounder the fish, and Sebastian the crab. But when the storm came through she rescued a human prince named Eric, who wants to find a woman who has a beautiful voice in order of his arrangement rule of marriage from Grimsby. What the Toons didn't know is that Ariel dealing with the devil was Ursula, who has banished and exiled from the king. She created a potion to make Ariel a human by signing the contract and traded her beautiful voice. Will the Toons find a way to help Ariel be a human and searching for her true love to break the spell? Find out in this underwater adventure of Toons adventures series.