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.
The coastal town of Bristol Cove is known for its legend of once being home to mermaids. When the arrival of a mysterious girl proves this folklore all too true, the battle between man and sea takes a very vicious turn as these predatory beings return to reclaim their right to the ocean.