Tia's war racks up casualties as she and Ryn prepare to face each other for the final time.
Tia takes her plan to the next level with an attack on Bristol Cove
Wedding bells are in the air
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
Ben must make a tough moral decision to help save Ryn, and it has far reaching consequences.
Ben must put aside his jealousy in order for Ryn to mate.
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.
Nicole helps Ben and Maddie research the siren song appropriately. Other discoveries come to light.