Mimic

Decades ago, a high school girl was murdered by the hands of her bullies who then left her in a river to rot alone, where no one could hear her final plead. In her last final moments, she was filled with rage and vowed to get her revenge on the ones who had harmed her. Before she knew it, she had been revived but into a different form, one that was darker and more horrendous, one that allowed her to reenact her on her bullies. She went out and slaughtered each of them, killing them one by one, turning into the very people they trust and luring them in to their demise. Now, a group of kids around the same age return back to the school only to find out that the girl is still alive and is now hunting them down, still fueled by her rage for what had happened. The group now must survive and make it out of the constant loophole they are in, surviving against the lady now known as the mimic.