Bloom and Sky are now finally together, and they have two daughters Sianna and Arabella. Arabella was born a fairy just like her mother , however Sianna isn't. Can there be chaos between raising two different daughters? The girls experience everyday teen problems such as love, drama, and family but mostly drama. The girls may have completely different lives, but their sister bond is more powerful and they'd die for each other.

In an 18th Century world a teenage mermaid, Eva, tries to fit in, struggling to cope after saving the world from a comet that almost destroyed the planet.