Samantha (Kate Mara) is a reporter for a high school newspaper. She was blacklisted from attending the homecoming festival for reporting the scandal of the school team. Her two friends Jinna and Mindy (Olesya Rulin) also suffered. The three girls had nothing to do, so they gathered together to tell stories to pass the time. They first told the legend that a good girl named Mary in Salt Lake City was killed by members of the school team in 1969, and then mentioned the terrifying "Bloody Mary". After that, the three girls disappeared mysteriously and appeared in an abandoned factory in the suburbs the next day. Although the parties involved believed that the incident was actually caused by the boys on the team, Samantha was often troubled by the welcome of "Bloody Mary" from that moment on. Soon, a boy on the team died strangely. Samantha believed that the terrifying evil spirit that seemed to have been forgotten for decades was slowly waking up and launching her bloody revenge...