One year ago, Isabelle Drake's son, Mason, was taken out of his crib in the middle of the night. Isabelle cannot rest until Mason is returned to her - literally. Except for the occasional catnap or small blackout where she loses track of time, she hasn't slept in a year. In hopes of jarring loose a new witness or buried clue, she agrees to be interviewed by a true-crime podcaster, but his incessant questioning paired with her severe insomnia has brought up uncomfortable memories from her own childhood, making Isabelle start to doubt her recollection of the night of Mason's disappearance. But she is determined to figure out the truth no matter where it leads.