The city of Atlantica is a wonderful place to live in, but when Ariel releases an evil manta from imprisonment he spreads the path of prejudice for the creatures of Atlantica. Everybody separates from each, but Ariel and Flounder stay together and work things out in Atlantica.

Ariel and her little sea friends get King Triton gifts for Father's day. She goes to a cave to get a glowing seashell and they get trapped in by an octupus so Urchin uses the triton to beat him but loses it in the process.