The last episode of this series feels like not a proper goodbye to all the characters. I feel like it's just a casual ending for every episode and makes me think there's another episodes but unfortunately there's no more. The ending should be a graduation scene where Zac, Evie, Cam, Carly and David graduated from their school. There should be a scene where Serena make her special appearance so that she can see David once again. If they just continue the season until episode 26, I think their last enemy would be the mermaid that put the curse on Zac and Mimi's mother.
I'm gonna miss this show a lot, I'm gonna miss my favourite character which is Serena and her sweet siren voice, and I'm gonna miss the theme song plays every opening of this show.