A weapons raid gone wrong leads to the escape of a lethal and vicious Flyman (a part fly/part man phenomenon) who wastes no time finding it’s first kill.
Victims of the Flyman quickly become Flymen themselves, and so Cork city is soon riddled with these monsters. With both the Gardai and Army curiously occupied, the Mayor of Cork reluctantly hires The Bugbusters (an incredibly extreme quartet of exterminators) to deal with the problem before the Flymen carry out their plan to seize control of the region’s entire supply of sugar.
Armed with their gung-ho attitude, fantastic outfits and heavy artillery, The Bugbusters clamp down on the presence of Flymen in Cork.
However, a failed attempt to capture the original and most dangerous Flyman results in the Mayor taking them off the case, much to his delight.
Down and despondant, The Bugbusters are soon reminded of their place in society and that what they do best is killing bugs. Now as renegade vigilantes, the Bugbusters hatch a plan to lure the Flyman in and finish him off once and for all.