After receiving a promotion and more responsibility at work, Melanie decides to hire Phoebe as her personal assistant. Smart and cunning, Phoebe has an ulterior motive for taking the job and a twisted plan for revenge involving Melanie's mother.

Mankind is nearly extinct in this post-apocalyptic creature thriller. Most humans died from a deadly plague and the ice age they manufactured to eradicate it. A man named Vargas leads a group of survivors on a quest to reach Shangri-La, the last safe haven on Earth. However, they must fight through the cold, a mutant cult and a pack of deadly creatures to get there.