Mona moves into a big apartment in an old building with her boyfriend Robby, who has just landed his dream job, and soon falls pregnant with their first child. She is plagued by bad dreams, and when the new-born baby next door dies, her crippling nightmares intensify – night after night, the same demon attacks her in her sleep. Mona begins to believe that the creature is very real and that it is seeking to enter our world through her unborn child. Soon she will realize that not all nightmares are over when you wake up.