A couple on the verge of a nasty divorce attempt to sell their empty love nest and move on with their lives, separately. After a successful open house they are horrified to discover, days later, that a potential buyer didn't leave their home. While Alice is being held captive in the basement, the unannounced house guest moves in upstairs. She senses her capture is being kept a rebellious secret. She knows her way only way out if she can only get out alive. 　　译文(2): 一对即将离婚的夫妇试图卖掉他们空荡荡的爱巢，然后分开继续他们的生活。在一次成功的开放参观后，他们惊恐地发现，几天后，一个潜在的买家没有离开他们的房子。当爱丽丝被囚禁在地下室的时候，这位不速之客搬到了楼上。她感觉到她的被捕是一个叛逆的秘密。只有活着出去，她才知道怎么出去。