The film is very well done, with a tension and mystery. The film is about a student called Amy struggling to make ends meet. She answers an ad posted in the college and finds a place to stay with a married couple, Joan and Stuart. As time goes on, Amy agrees to help the childless couple have a baby by becoming a surrogate mother. While pregnant, a lot of things about Joan doesn't make sense. The character Joan has a dark secret and wants nobody to reveal it. Even though she's a crazed and hostile woman, there is also a very tragic and very sad reason behind it.