A coastal town known for its legend of once being home to mermaids is turned upside down when a mysterious girl appears and begins wreaking havoc.

Siren takes us inside Bristol Cove - a coastal town 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.—ahmetkozan

The coastal town of Bristol Cove, known for its legend of once being home to mermaids, is turned upside down when a mysterious young woman (Eline Powell) appears and begins wreaking havoc upon the small fishing town to look for her captured sister (Sibongile Mlambo) who was abducted at the hands of the local military. Marine biologists Ben (Alex Roe) and Maddie (Fola Evans-Akingbola) work together to find out who and what drove this primal hunter of the deep sea to land.—ahmetkozan