Wimpy Greg Heffley, now in seventh grade, thinks he has it all together. He has mastered middle school and gotten rid of the Cheese Touch. However, Greg's older brother, Rodrick, is itching to cut him down to size. He gets the perfect opportunity when their mother tries to force the boys to bond. Rodrick may be Greg's chief tormentor, but he feels his constant pranks are just what his little brother needs to prepare him for life's hard knocks.
Della Myers, a suburban housewife, lives with her twin children and her abusive husband, Kenneth. On Christmas Eve, she drives to the local mall to buy gift-wrap. In the jam-packed parking lot, she notices an old car taking up two spaces and decides to leave a note on the windshield calling them out. After the mall closes, her car is blocked by the old car and she's threatened by four thugs. She escapes in her vehicle, but they drive after her. She crashes at a dead end construction site at the edge of a forest. What unfolds in the desolate woods is Della's lone fight for survival against a gang of angry young men with murderous intent.