One teacher. Two girls. Three theories. When Maria and Katie walk into school on the first day of senior year, they are full of hopes for the year that lies ahead. All they have to do is get through this year. Pass their finals. Then they're free to do whatever they want. However, on their second day they soon realize that perhaps this year will not be as smooth sailing as they thought. There is something up with their biology teacher. Something that just doesn't sit quite right with them. Something.