Ep 4. Urchin

Ariel and her friends come across an orphaned merboy named Urchin who they take under their wing. While he seems sweet and harmless at first, they soon realize he has a mischievous streak and can be quite a handful. In an effort to get him to behave, they assign him various tasks around Atlantica. However, Urchin's antics lead to trouble when he inadvertently releases a dangerous sea monster from a magical cage. Ariel and her friends must work together to stop the creature and teach Urchin the importance of responsibility. Along the way, Ariel learns about the challenges of parenting and the importance of having patience and understanding.