"Mako: Island of Secrets" is an Australian television series that follows a group of teenagers who discover a magical island with a hidden secret. The story revolves around Mako Island, where a mysterious moon pool grants special powers to those who come into contact with its waters. The main characters, including Cleo Sertori, Emma Gilbert, and Rikki Chadwick, navigate the challenges of their newfound abilities while dealing with the complexities of friendship and adolescence. The series combines elements of fantasy and drama, appealing to a young audience with its engaging plot and relatable characters.