In Weyrd County, New Jersey, a UFO crashes into the Pinelands. Rumors soon spread throughout the county that the craft's occupants have escaped the military cordon around the crash site. As panic spreads, Bud McCracken, a pest exterminator, picks up a last-minute overtime assignment, and his client turns out to be his former grade school teacher Alice Cranberry, a cruel woman whose wickedness has sharpened with age. When he meets his old nemesis face to face, Bud soon discovers that the 'pest problem' at Alice's house is not of this world. Conventional chemicals prove ineffective against the insectoid aliens that have invaded Alice's basement, leaving Bud to resort to more drastic means. Meanwhile, Alice picks up where she left off decades ago belittling Bud with every chance she gets. As chaos descends over Weyrd County, Bud knows there's only one way to deal with his childhood trauma. But Alice, under the aliens' telehypnotic spell, won't go without a fight.to the death.