4名大学生前往东爪哇的威里朗火山徒步散心，在半山腰发现了一个诡异的“集市”，误闯后迷失方向，最终被困在一个超自然村庄。随着时间推移，他们逐渐发现这里是活人世界与灵界的交界，村庄里的居民并非人类。他们也被卷入了一场以活人献祭为目的的古老仪式中，大家的生命危在旦夕…
一对夫妻在他们的土地里挖掘出一座古墓后，围绕着一条被诅咒的项链和一个充满复仇之心的鬼魂，发生了一连串恐怖事件……
民国年间，与世隔绝的怪水村被湖中“水猴子”所扰。此物实为濒危水栖人猿，能模仿人言诱杀村民。少年水生幼年目睹父亲惨死其手，自此深陷恐惧。村中长老三叔公借祭祀之名行愚昧统治，以活人献祭暂息水怪，却埋下更深祸根。连年暴雨与人为侵扰激怒水猴子，袭击频发。当香兰之弟被食、其父莫叔反抗被杀，香兰决意以身献祭复仇。水生幡然觉醒，不再逃避，联合青年村民布设机关陷阱，假借献祭诱敌。恶战后水怪被擒，却于庆功夜破笼而出，血洗村庄，三叔公亦命丧其口。村民终于醒悟：迷信退让换不来平安。水生断发持叉，率众设伏，以智慧与血勇将水怪斩杀。晨光中，他与香兰相扶而立，唯有直面恐惧、团结抗争，方能驱散千年阴霾，重获新生。
夜半时分直播，似乎有某种不可名状的诡异幽魂在暗中窥视，试图将方婉辰拖入无尽的黑暗，诡异的音乐响起、魅影的低语回荡、死去的怨灵发出令人毛骨悚然的警告，在这场无法终止的直播中，慢慢将她吞噬，惊魂鬼影频频飘荡，到底是谁惊扰了她？
Four college students venture to a storied haunted house over night. The goal is simple, obtain research for a paper they are writing on urban myths and legends. A caretaker, played by Richard Grieco, greets them and offers to share the tale of the home's tragic beginnings. As events unfold, the group starts to understand there's more to the stories than they first believed. Friendships and motives are questioned. The gentle caretaker's role is brought into questions. When tragedy strikes, they finally understand that Sanctus House is more than myth.
