Scott McCall's older sister, Madigan, comes back after 4 years of going to college and traveling the world with only a backpack and a skateboard. The 21-year old comes back just the day before half of a body gets found in the woods. A good older sister would never let her younger brother and his friend go into the woods in the middle of the night alone, so she goes with them. After that night, Madigan finally knows that there would be no way to outrun her past.