Five women go camping in a remote mountain range. None return.

Chloe, Hayley, Rachel, Lisa & Zoe. Each has their own reason for needing to get away. But what starts as a camping trip takes a dark turn when they start to question if they're really alone on the mountainside. What really awaits the girls outside the relative safety of their tent? And more importantly, do they really know who's inside it?

Based upon the real events of the Dyatlov Pass Incident, this psychological thriller transfers the setting to the modern day, but explores the mysteries that have remained unsolved since the 1950s. Why was the tent cut open from the inside out? Why were the bodies partially dressed in each others' clothing? And what was meant by the group's chilling final journal entry:

'We know now snowmen exist.'