A group of five young friends travel from Los Angeles to exotic Panama for a week of partying in lush tropical paradise. Befriending a beautiful local woman in their hotel bar, they learn of a secret jungle hike to a pristine waterfall nearby. The woman cautions them strongly against the hike, warning that other gringos in search of the legendary waterfall had mysteriously disappeared into the jungle, never to be seen or heard from again.　　Ignoring her warnings, the group convinces the woman to guide them to the picturesque waterfall, thinking that they have nothing to fear with a local as their guide. What begins as a fun outing quickly turns terrifying when their guide mysteriously vanishes after a romantic tryst at the falls. As night closes in, the friends realize too late the truth behind her warnings— horrific, bloodthirsty, flesh-eating creatures are now stalking them. The mangled survivors rush to jungle caves for shelter, only to realize they’ve entered the monsters’ lair!

1）名叫蒂米的男童怨灵会在万圣节当晚四处寻找糖果，甚至会为此挖开他人的肚子；2）小男孩被逼迫去一户人家恶作剧，结果被长着角的男主人抓住，两人一起上街恶搞乃至戕害狂欢的人群；3）某户人家正坐在客厅看电影，这时有个打扮成巫婆的女孩敲门，却用刀捅了男主人，恐怖的万圣节变成灾难，当然他们正为自己的所作所为付出代价；4）二男一女不良少年团伙在万圣节之夜四处欺负他人，这时打扮成魔鬼的少年出面阻止他们，反而被三人抓住。5）老妇人和亲朋们讲述了玛丽•贝利的传说，那是一个不愿意被人看到的女人的怨灵，如果被她看到可就惨了；6）无法承受丧女之痛的女人在万圣节之夜变成了心理失衡的恶魔；7）中年人的对面，搬来几个重口味的金属青年，夜幕降临，他和重金属们发生了冲突；8）密林深处，失魂落魄的少女被无情的杀人狂追逐，突然怪事发生；9）两个劫匪企图在万圣节绑架某富豪的孩子，怎奈请神容易送神难；10）男人好不容易雕了一个南瓜头，结果南瓜头突然活了过来，大闹街头。