The Outpost – Mermaid mating season has begun, with Ryn knowing she will need to go back to the sea to help her colony. The hybrids convince one of the mermaids to come with them to a remote location, leading Helen and Ben on a hunt to find them. A journalist turns to Xander for help putting the pieces together of the night of the oil rig disaster, but Xander is torn on where his loyalties lie and what helping him could mean for his future.
Serenity – Ryn finds out that staying on land longer makes it harder for her to go back to the ocean; Helen and Ted bonds over their family histories.
Mixed Signals – Maddie and Ben are facing a dilemma on how to help both Ryn and Elaine; The military gets interested on how they can use Ryn against the other groups.
All In – Elaine Pownall seeks treatment from the military’s medical trial using mermaid cells.
No North Star – Ryn returns to land to follow through on an agreement she made with the military.
Leverage – Humans and mermaids join forces to stop the oil company.
Entrapment – Tensions rise following a shocking discovery; living in a tank rather than the ocean starts to have an adverse effect on many of the mermaids; hoping to save her kind and help her human circle, Ryn makes a deal with a complicated ally.
Distress Call – Katrina tries to get the rest of the mermaid pack on her side.
Primal Instincts – Ryn continues to try to teach the other mermaids to be more human on land to better integrate, but some are starting to resist her; Maddie finds herself in a dangerous situation trying to help her mom, who has fallen off the wagon; and Ben and Xander reconcile in order to work together to get the mermaid pack back into the water.
Oil & Water – Ryn decides they need to find another solution for housing mermaids as the pack dynamics remain precarious; Ben becomes a mentor to Levi as he tries to learn how men behave on land; and Maddie continues to struggle with her mother’s renewed presence.