It's Lily Summers' first day as a high school senior. She has recently found out that her friend Grace is missing and she doesn't remember what happened the night she disappeared. Lily, her boyfriend Carter, her twin sister Juniper and a milkshake vendor Mr.Palinsky are all being treated as suspects. But what really happened to Grace? Did she run away or was she kidnapped against her own will? As the story unfolds you will see that evil resides in the most unexpected places.