Rory Wade fears what will happen to her while she's asleep. Upon awakening one morning, scars and bruises cover every part of her body. Although she is unaware of the situation, she believes it may be related to the disappearance of her father, which occurred concurrently with the onset of her sleepwalking symptoms. She then encounters Seth, a mysterious young man who appears to possess all the answers to her inquiries and walks with a distinct purpose. Four teens who identify as "Dream Crashers" completely upend her perception of reality. They fight demons that prey on people in their most vulnerable sleep phases, but they now face an unbeatable foe. Rory has special powers that they are unable to explain, which is why they are interested in her. She learns the truth about her father's absence and a side of herself she never knew existed.