Three coworkers on the night shift at a remote diner get in over their heads after digging for proof that one of their customers is a serial killer.

故事講述求生專家柏特蓋默受雇到南非獵補兇猛的食人野獸，他有夥伴崔維斯威克的協助，將與怪獸開展一場生死對決大戰，然而這些受到進化影響的怪獸，完全超乎他們原先的想像。

三名好友携手保卫他们所珍视的矿业公司，对抗烧杀抢掠的外星怪物。又名：办公室大入侵