Carmen and Carla were identical twin sisters that even their parents had a hard time telling them a part. Their father took a job in Colorado, so they had to leave all their friends behind in California. Rocky Mountain high school was going to be their new playground, and since they were the new students wreaking havoc on the students was going to be easy. Most seniors are thinking about prom, being crown prom king and queen, graduation, and the colleges they hoped to be getting into, but Carmen and Carla intentions were to rid the school of all the kids that were evil, but they turned out to be the evil ones. They started killing off kids one by one while they sung nursery rhymes. As the bodies started to pile up the police had no clue who the killer or killers were. The principle (Mr. Culver) had no choice but to close the school down for the rest of the school year to try and make sure no one else died at the hands of the Rocky Mountain High School Killer.