Leading a troop of boys into the Canadian wilderness for a traditional weekend camping trip, scoutmaster Tim Riggs encounters a disturbing, voraciously hungry intruder in the woods who infects the troop with a bioengineered disease.

After his son dies, guitarist Quinn Porter, who has been largely absent from his son's life, seeks forgiveness for his paternal shortcomings by completing the requirements for his son's unfinished Boy Scout badge, an act of devotion that brings about unexpected discoveries, friendships and salvation.

When a 15-year-old boy goes missing, leaving behind a strange note, detectives Jeppe Kørner and Anette Werner become trapped in a web of lies that could prevent the boy from ever being found.