After losing their academic posts at a prestigious university, a team of parapsychologists goes into business as proton-pack-toting "ghostbusters" who exterminate ghouls, hobgoblins and supernatural pests of all stripes. An ad campaign pays off when a knockout cellist hires the squad to purge her swanky digs of demons that appear to be living in her refrigerator.
Scott Turner has 3 days left in the local police department before he moves to a bigger city to get some 'real' cases—not just misdemeanors. When Amos Reed is murdered, Scott sets himself on the case, but the closest thing to a witness to the murder is Reed's dog, Hooch, which Scott has to take care of—to avoid Hooch being 'put to sleep'.
To prove his brother's innocence, undercover officer Nick enrolls in high school again, dealing with crushes, bullies, humiliations, popularity swings, and quirky teachers and staff to find the real murderer.