For Marnie (Bell), high school was a horror movie, and her brother's wedding is the sequel when her archrival comes back to haunt her as his bride. It's nice girl versus mean girl in this hysterical reunion with the one person Marnie would really like to forget. And if that weren't enough, Marnie's mom (Curtis) reunites with her own high school nemesis (Weaver). - High school rivalries re-erupt during a wedding.