In this comedy, police detectives on the trail of a dangerous criminal are confronted with a new and unexpected danger: a typical suburban family. Osborn (Robert Davi) is a underworld figure with plenty of blood on his hands who, in hopes of keeping his dealings quiet, is operating out of an unassuming home in the suburbs. The police are determined to put Osborn behind bars, so rough-hewn veteran cop Jake Stone (Jack Palance) and his young partner Tony Moore (David Barry Gray) are assigned to stake out Osborn's home, and they get permission to keep watch from the house next door, which belongs to the Robberson family. However, Jake and Tony soon discover that this prime location may be more trouble than it's worth; Norman Robberson (Chevy Chase) is a dunderhead addicted to TV police shows who insists on helping whether it's a good idea or not, mother Helen (Dianne Wiest) keeps pestering Jake about why he shouldn't smoke, teenage daughter Cindy (Fay Masterson) develops a furious crush on Tony, and five-year-old son Billy (Miko Hughes) wants the cops to play vampire with him.