Off the south of England, an old evil has been set free... While
drilling out at sea, the ill-fated crew of a rig have released something
old, something that's been waiting to return to the surface...a hive of
sea sirens; Creatures that need human hosts to survive and human faces
to lure people to their demise. Kirsten Costello is a model from East
London. Bored of her vacuous existence, she leaves her old life of
excess behind and moves to Brighton with her cousin Simone. After a
random attack one night under Brighton Pier, Kirsten becomes the object
of one of the creature's obsession. Psychically linked by its scratch,
she becomes a beacon for its desire to use her body as its own and be
the face they need. Always knowing where she is, constantly stalking her
by night, it seems there is no way to escape. With the help of Simone,
her girlfriend Geena, and local Clairvoyant, Melissa Clarke, Kirsten
must fight back against the creature, as it tries to drag her back down
below into the depths, down into the Night Waves.