After her younger sister, Piper, is in a hiking accident that leaves her in a coma, Savannah finds evidence that her fall from a mountain may be related to their school's Survival Club--and it may not have been accidental. As she tries to figure out who would want to hurt Piper, Savannah joins the club on their weekend camping trip to the same mountain where Piper fell. Savannah tries to learn what happened to Piper in a club where everyone is a suspect and everyone is keeping secrets.