Cecelia Ross, her twin sister Estella, and four of their friends are messing around in the woods behind their houses when something rather unexpected appears. Their English teacher lying dead in the grass. A bottle of poison pills is found in her possession, and the same poison is found in her system, so the police rule it as suicide. But the girls don't believe it, so, they decide to find the criminal on their own. Little do they know, the killer may be closer than they ever thought possible.