Mako: Island of Secrets (2013)

S2E9 Stowaway

A young mermaid secretly trails Ondina after a meeting of the mermaid council, leading her to Mako Island. This unexpected visit could create significant issues for the pod and disrupt the harmony of their underwater world. As tensions rise, Ondina must navigate the challenges that come with the uninvited guest and the potential consequences for both her and her friends.