Brynn and Jade have been best friends for a hundred years. It seems like nothing can separate them. But when Brynn is suspected of serious misconduct, the girls are forbidden to communicate. Terrible injustice! Moreover, it seems that now Brynn is in danger of complete loneliness. After all, confident in her friendship with Jade, she did not even think about communicating with anyone else! To restore her good name and return her friend, Brynn will have to once again encounter an old friend - Phaedra. But without help, the little schoolgirl mermaid cannot defeat the powerful sea witch. This means that Brynn needs to find a loyal, smart, brave and kind friend - and urgently!