影片讲述了因不明感染事件而被封锁的建筑内，孤立无援的幸存者们对抗以无法预测形态进化的感染者的故事。
After several mysterious accidents, A Live Action Role Playing game is interrupted and the players leave the bunker while the staff remains behind to investigate the disappearance of Greg, the mastermind of the game.
The first feminist vegan horror film, The Herd has been rejected by some film festivals for being too horrific or political. A number of kidnapped women are kept imprisoned in a squalid medical facility condemned to a life of enforced servitude at the whims of their captors, without any hope of rescue or escape.
凯莉卡伯不了解她的丈夫－罗杰，为何锺爱这幢世袭的房子，甚至他同父异母的兄弟，出高价都不为所动。或许是他的祖父立过血誓永不变卖，罗杰也不愿违背誓言。突然间一切都改变了，罗杰被车子撞死，十三岁的女儿劳莉因此瘫痪，凯莉搬进老屋抚养女儿，远思亡夫。但房子隐藏著某种邪恶的力量紧追著她，黏土从水龙头流出；地窟传来呻吟的声音。凯莉被搞得精疲力竭，一幢古怪传统的房子，频有幽魂作怪。一连串阴森反覆无常的恐怖事情即将展开…。
