A woman boards a train that derails into a lake in the middle of the night. She, along with other survivors find themselves trapped. They discover what lies beneath the surface is far more terrifying as they fight to stay alive.
A fishing community on a remote Maine island finds itself suddenly cut off from the rest of the world after the ferry stops coming. When people start to vanish, the terrified survivors realize that someone - or something - is hunting them.
Sadie is enticed by an ex-lover to join him and an enigmatic woman named Francesca at an Italian Villa. Once there, Sadie is confronted by the demons of her past as she becomes embroiled in a surreal game of murder and betrayal.