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
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.
Ryn's life is somewhat normal. But another woman of the sea appears in Bristol Cove to change all that.
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
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.