It's senior year, and Hadley and her best friend, Magda, should be starting the year together. Instead, Magda is dead and Hadley is alone. Raped at a party the year before and humiliated, Magda was driven to take her own life and Hadley is forced to see her friend's attackers in the classroom every day. Devastated, enraged and needing an outlet for her grief, Hadley decides to get a little justice of her own.

Donning a pink ski mask and fueled by anger, Hadley goes after each of the guys one by one, planning to strip them of their dignity and social status the way they did to Magda. As the legend of the pink-masked Vigilante begins to take on a life of its own, Hadley's revenge takes a turn for the dangerous. Could her need for vengeance lead her down a path she can't turn back from?