Four inseparable best friends Rose, Alison, Sarah, and Hannah are having a normal, girly slumber party like most teens girls do. It is all fun and exciting until the girls wake up the next morning and find that Alison is nowhere to be found . . . she was kidnapped. For the next couple weeks the girls get anonymous texts from the person who claims to be Alison's kidnapper. This person, who hides behind the name "A", knows all of the girls deepest, darkest, and saddest secrets. "A" is using all of the girls secrets against them and overtime drives them to the lowest points in their lives. "A" made the girls miserable, but they have to come together to find and save Alison. Will they ever find Alison?