At Pea Tree Apartments, a series of gruesome murders and mutilations have been taking place, staining the halls with blood. Pete and Cass are the maintenance men for the building, and not only have to clean up the mess, but slowly discover that the murders are being committed with Pete's tools. Who--or what--is committing the murders seems to be untraceable, as each possible clue merely leads to another dead end. What mysterious evil is committing the bloody murders, and is it even possible to stop it?