My Pitch For A New Horror Movie

It’s the last day of school and a group of five teenage girls (15-16 years old) decide they want to get revenge of their teacher for all the trouble she caused them in the past. So after school all the teachers start to go home, with the main teacher in her classroom packing his belongings getting ready to go home. They spy on him until he’s about to leave and wait for their moment to get revenge. They shove this teacher into a cupboard from behind and lock him in there, so he’s unaware who it was. The girls start to make their way to the exit when one of the girls (Taylor) feels a sense of regret and says she needs the toilet. She walks back to the cupboard whilst the others wait for her unknowing she’s going to let him out. Taylor goes to open the cupboard and it’s already unlocked; the cupboard’s empty. Suddenly there's a power failure, the lights turn off and the doors are locked. Taylor is alone and goes to find the other girls but they’re not where she expected. Meanwhile the other girls think that Taylor’s playing a prank and she was the one who caused the power cut. They ring Taylor but its going straight to voicemail, so they split up in groups of two in order to find her and go home. Two of the girls (Brooke and Ashley) start to argue as result of their fear. This leads to Brooke revealing she slept with Ashley’s boyfriend while they were together. This turns into a physical fight (of which Ashley is losing) so she grabs the nearest object and hits Brooke on the head. Brooke falls to the ground with blood gushing from her head and dies seconds later as a result of the hit. The other two girls (Casey and Sarah) find Brooke’s body, whilst Taylor and Ashley are alone wandering the school premises. From then on all of the girls are scared, upset and angry, with nobody knowing the identity of the killer. The girls start to die one by one and a moment of revenge turns into a fight for their lives.