They are isolated - but they are not alone . . .

When a deadly snowstorm strikes the Icelandic highlands, four friends seek shelter in a tiny, abandoned hunting lodge.

A terrifying discovery . . .

Far from offering relief, however, they find something truly shocking. Yet they dare not leave.

A haunting darkness . . .

As the night lengthens, their fears intensify. Old secrets and past tragedies spill into the light. And, slowly, these four friends begin to turn on one another.

Outside, a murderous storm rages.

But is inside even deadlier?