A housesitter stays with a family till she gets her next housekeeping job. The family soon discovers that the woman is not as innocent and sane as she appears.

一个喝醉了的父亲在给他的儿子讲睡前故事，讲的是一群人在闹鬼的监狱里过夜，他们都带着“魔鬼的酸”。然后他们开始有问题区分现实和旅行。