On a cold winter night, Iris and her best friend, Daniel, sneak into a clearing in the woods to play in the freshly fallen snow. There, Iris carefully makes a perfect snow angel -- only to find the crumbling gravestone of a young girl, Avery Moore, right beneath her. Immediately, strange things start to happen to Iris: She begins having vivid nightmares. She wakes up to find her bedroom window wide open, letting in the snow. She thinks she sees the...