在这部人类动作/冒险/恐怖片中,一队科研人员来到瑞士阿尔卑斯山脉调查关于人类进化的一个科学发现。当他们坠入溪谷，科考之旅变成死亡之路，他们发现自己成为某个人或者说——某个怪物的猎物……
A team of several researchers travel to the Swiss Alps to investigate a scientific discovery on human evolution. The trip, however, turns into a deadly fight for survival when the team crash into a gully and find themselves falling prey to someone...or something.
