Martin arrives at work to find his colleagues absent and the letter "M" written around the building. Thinking it is a prank, Martin investigates and encounters a shadowy man. He realizes this is no joke and he is in danger. The document discusses casting Devon Sawa as the lead character Martin and Kevin Spacey as the serial killer antagonist. It is proposed as a psychological horror/thriller rated 15 years due to violence and disturbing scenes. The main locations are Martin's workplace, where the hunt begins with staircases and layout suited to a psychological chase, and a canal near the workplace, where Martin will initially commute and later flee to escape the killer.