Daisy and Henry are best friends, and they know all each other's secrets. Or, so Daisy thinks, until she wakes up one morning to find that Henry and his family have disappeared without a trace. Daisy suspects Henry's disappearance is connected to their seriously awkward meeting the night before, but then she finds a note from Henry, containing just the words "SAVE ME."

Deeply worried, Daisy convinces her unemployed brother to take her on a rescue mission into the California mountains. As they begin to home in on Henry's exact location, they also start to find some disturbing clues . . . clues that call into question everything Daisy believes she knows about her friend. Why is he so hard to find? What kind of trouble is he in, exactly? And most importantly, who is actually saving who?