Recently widowed, Abe, a lonely grandfather welcomes his granddaughter, Mathilde, to spend an enjoyable weekend at his house. The little girl, like her grandma, is fascinated by the legend of the Dream Eater, a creature that feeds on people’s nightmares. Although Mathilde has never really had the opportunity to know the complete story, she counts on this visit to learn more about it. Strangely the old man is reluctant and appears to be hiding a bigger secret. Why is the house full of alarm clocks set to ring every 30 min? What is this ancient book no one is allowed to open?