After James Pollack's terminal cancer diagnosis leaves the family reeling, his adoring wife Casey is willing to try anything in the search for a cure. Loading up their two teenage kids Jason and Jessica, and Jessica's best friend Becky Lane, the family treks to a remote cabin in Oregon for some recuperation. The cabin is built on iron-oxide, with alleged healing properties, and Casey is anxious for this alternative treatment to work. As the family settles into the rustic cabin, a shroud of snow beings to fall, beckoning James outside in the search for firewood. Instead of kindling, James encounters an enigmatic woman passed out in the snow. Bringing her to the cabin for help, the family has no way of knowing that the woman's presence is the catalyst for a series of events that will change their lives forever.