Regina Ollison was the shy, awkward girl next door. She was invisible to everyone except her best friend, Leah. These two have each other's backs, which is exactly what they need when a serial killer begins attacking their peers. As a graduation present, the parents send the girls to their condo in Myrtle Beach, hoping they'll be able to relax and have a good time. All is going well when Regina's high school crush shows up at the party. Is it a coincidence that killings begin happening when Frankie arrives? Or does he know more than he's saying? The girls learn to fight back and uncover a secret so dark, their friendship may not survive.