When a daring mission leads a deep sea submarine team into a mysterious opening on the ocean floor, they uncover a lost underwater world and awaken its ancient race of otherworldly beings.

In Margate, England, life is not easy for teenager Sarah Taylor, between being bullied at school, being exploited by a dominant boss and having to take care of her depressive mother and her two siblings. But Sarah finds a way to channel her growing despair and fight adversity when her drama teacher gives her a new purpose.

Gunned down in the snowy wilderness and desperate for shelter, Billy Cavanagh is taken in by kooky old lady Agnes, unaware that her isolated log cabin is surrounded by bloodthirsty skinless creatures hellbent on getting inside.