Ariel, King Triton's youngest daughter, wishes to pursue the human Prince Eric in the unknown world up above. However, to pursue this wish, Ariel bargain with the evil sea witch, Ursula, to trade her tail for legs. But the bargain came with consequences, and Ariel needs the help of her amazing sea friends, Flounder the fish, Scuttle the seagull and Sebastian the crab to restore order under the sea.