La’an travels back in time to twenty-first-century Earth to prevent an attack which will alter humanity’s future history—and bring her face to face with her own contentious legacy.

The U.S.S. Enterprise becomes stuck in a nebula that is home to an alien consciousness that traps the crew in a fairy tale.

While Jane sets out to prove her worth in The Underground, Cliff goes into “dad” mode and Niles devotes a day to Dorothy, who’s finally growing up.

Tensions are rising following a shocking discovery. And living in a tank rather than the ocean is starting to have an adverse effect on many of the mermaids. Hoping to…

Ben, Maddie and Ryn desperately try and keep the newly arrived mermaid pack hidden from the rest of the town, but the new mermaids’ quick degradation on land forces them…