Background Story of My Film

The background story of my film is that a teenager goes out to hunt down his cousin who framed him for a murder he didnt commit and now he is out for revenge. He finds his cousin and kills her in the local wood with a gun. But then he wakes up completley unaware of what he did, it turns out that he has a split personality and then there will be a cliff hanger, which then leads onto the rest of the story