When a group of scientists at the bottom of the world uncover a hidden tropical world within a vast snow-covered mountain range, they think they’ve found a secret repository of unknown botanical species. But when several of the team go missing during the nights, they realize they’ve uncovered something far more sinister. And with an agenda far more horrifying than any of them could ever have imagined. Now, stalked through the darkness and the frozen landscape, the remaining scientists must band together or risk becoming the latest in a series of nightmarish experiments whose goal is too terrible to imagine…and possibly the destruction of Earth itself.