Ryn and her folk fight for their lives against Katrina. Maddie finds out a huge secret.
Ryn learns about motherhood on land. Xander juggles his personal life and his secrets.
Ryn's child is about to be born
Ryn discovers a major secret
Ted's obsession puts him in danger. Ryn and Tia experience a violent difference in opinion.
Ben must make a tough moral decision to help save Ryn, and it has far reaching consequences.
Ryn must undergo a difficult process to ensure the survival of her species
The military spy on Ben, Maddie, and Ryn, while the mermaid struggles once mating season begins.
Ryn takes Ben and Maddie to a secret place below the ocean. Levi returns to land.
Ryn returns to Ben and Maddie. The thrupple must learn to trust an outsider.
Ben struggles with the siren's song effects, but Ryn also struggles with her feelings for him and Maddie, too.
Ben struggles with the siren's song. Xander finds out about the merpeople on land.