Her dreams are your nightmares.

As if surviving high school wasn't hard enough, Sarah Reyes suffers from REM Sleep Behavior Disorder, a parasomnia that causes her to physically act out her dreams. When she almost snaps her friend's neck at a sleepover, Sarah and her nocturnal habits are thrust into the spotlight and she becomes a social pariah, complete with public humiliation.

When an experimental drug comes onto the market that promises nighttime normalcy, Sarah agrees to participate in the trial. At first, she seems to be cured. Then the side effects kick in. Why does a guy from her nightmare show up at school? Are the eerily similar dreams she's sharing with her classmates' coincidence or of her making? Is she losing her mind or does this drug offer way more than sleep?