The gory death of six biology students doing field work brings a scare in the campus where students keep missing. Everyone is speculating and suspecting one another to be the mysterious killer. It turns out that respected Biology professor Norman Guyena (Eric Quizon) and Guidance Counselor Claire Sales (Carmina Villaroel) are twins who inherited their psychosis from their demented mother. As kids Norman/ Freddie pushed his twin sister Carrie/ Claire over the bridge, and then claimed that she is taken by some men. The person who found Carrie gave her away to a couple who had Carrie institutionalized in a mental asylum. Carrie had to fend for herself until she returns with vengeance to kill Norman.