Jenna Walker has always been fascinated by the marked monster – the scarred half-bird half-beast creature said to roam the forest around her hometown. Is the marked monster real? Or is it just a silly story meant to scare kids? Jenna decides to find out once and for all with a camp out where she and her friends can search for the legendary beast. But as Jenna starts to learn more about the marked monster, she realizes that this legend might be more than just myth, and more sinister than she ever could have imagined. Will Jenna meet the marked monster face-to-face? And will she be marked for life?