河里，一具女尸犹如油画《奥菲利亚》中的样子漂浮在水中，死者为话剧女演员李菁菁（孟子叶饰），经法医韩枚（赵崔玮饰）判定，死者身体被掏空，溺水而死。如斯残暴的行凶手法，引发了所有人的存眷。凶手前后锁定在和女演员生前有染的话剧团导演和剧务，但是两边都有不在场证据，令案件一时堕入了僵局。此时，女法医给出了一个惊人的谜底，令所有人没法相信，死者的哥哥哀思欲尽，誓言要睁开报复。而此时真实的凶手却在酝酿着一场更年夜的诡计。A group of young men dare a classmate to reach the porch of a legendary old house, said to be haunted by the thirteen victims of a family massacre. In hopes of making a viral video they arm him with a video camera to prove he was there or to capture him fleeing in terror before even reaching the house, as others have. When he doesnt return, the guys must go in to get him. Inside they discover the truth about the house, the fate of their friend and their own fate as well.