Allison (Melissa George) is a rock climbing enthusiast. During a rock climbing activity in the Scottish Highlands, she and her four teammates accidentally discovered a secret basement where a young Serbian girl was locked up. Intuition told Allison that something was wrong, and she decided to rescue the poor kidnapped girl with her teammates out of a sense of justice. It turned out that the girl was the daughter of a gangster boss in Eastern Europe. Two kidnappers who didn't know the heights of the world kidnapped her, hoping to get a huge ransom. If this action failed, there was only one way to die waiting for them. The actions of Allison and his group angered the kidnappers. For the sake of profit and to save their lives, a thrilling chase between the mountaineering team and the vicious thugs unfolded. In addition to the threats from the kidnappers, the darkness and selfishness in the depths of human nature also opened their bloody mouths, waiting to devour them.