“Mom won’t be home for dinner tonight.” Dad says it like it’s nothing unusual, so Max and Rosie don’t worry. But as the days pass with no word from their mom, and ominous clues begin to emerge, the family starts to unravel. Enter their grandmother, Mozelle, with a plan. She will take Max and Rosie upstate to the old log cabin on a lake where their mom spent her summers as a child. Which is great…until they learn that there’s no electricity, cell service, or internet. This is a place where, when it gets dark, you go to bed. But according to Mozelle, their mother had her happiest dreams during her nights at the lake. That first night, Max and Rosie share an identical dream, about a community of kids from all over, who gather at the lake. And as impossible as it seems, the next night they find themselves back in the same dream. As Max slowly grasps what is really going on, he wonders if he might have found the key to the mystery of his mother’s disappearance—and how to bring her safely home.