Eight months later at the girl's graduation party Ellie thinks she sees Megan, but it turned out to actually be Megan's sister. Then the sisters receive a picture message of a someone holding a bloody tire iron. Panick-ing, the girls try to figure out who is doing this. The picture leads them to believe it is Garret and he's seeking his revenge now.
Chugs is the first to be killed. Later, Claire breaks up with her boyfriend Mickey, who later tries to kiss Ellie. When she refused he wondered off into the attic where the killer made Mickey his second victim. Ellie find his body and goes running to tell her sisters. The girls go back to the steel mill after getting another message, this time a video of them killing Megan. They find Garret there trying to commit suicide, but the girls take action and run him over.
They then return to the party to find everyone gone. After killing Jessica and Claire, the killer is face to face with Cassidy. She finds out it was her boyfriend Andy the whole time and as he was about to kill her, Ellie comes in and shoots him. Fifteen months later the sorority house is under renovation and Maggie, Megan's sister, is now a Theta Pi sister just like she was.