In this ""Pilot"" episode of the ABC half season spin-off of the original 1983 blockbuster smash hit under the same name starring Roy Scheider, Warren Oates and Malcolm McDowell, The Blue Thunder Unit take on a ruthless pilot who has been recently aerially assassinating police helicopter units over Los Angeles. In an attempt to settle an old long-lasting score with Frank Chaney, the pilot and leader of The Blue Thunder Unit, the crazed comedian who calls himself ""P.V.C."" contacts Chaney, Braddock and the rest of the team and warns Chaney personally that he is going to blow him out of the sky for what he did a year ago when he destroyed his aircraft with a 12-gauge shotgun during an unsuccessful drug bust while he was a police officer, plus to make sure that he succeeds in transporting a scheduled shipment of drugs over the Mexican border. Still continuing to wipe out airborne police units when very cannily evacuating the entire Astro-Division Building, and with the acknowledge of how the

A paramilitary group who call themselves the ""Posse Magistratus"", have been the prime suspects for a series of bank robberies, and one particulary involving a heavily-modified World War II fighter plane. In order to track down this plane and stop the whole game, Chaney and Wonderlove attempt to track it down, based on various aerial police sightings. When accomplishing this, Chaney spots gun mounts on a plane that they performed an unauthorised thermograph upon, and results in not in the state of valid evidence to charge the Sheriff who owns it for the state-threatening operations. However that same day, the same World War II figher plane attacks them, and ends up being shot down by Chaney in Blue Thunder. To posess reliable and sufficent evidence to charge the ''Posse Magistrates'' of the crimes they have took out, Ski goes undercover as a mechanic, but it isn't long until Chaney and Wonderlove discover that the group plan to kill one of the cities' main councilmen at the Queen Mary s

Aggie Mills, an former flame of Chaney's who he knew back in the Vietnam War, comes for help via the FBI to distort a much-growing drugs & gun smuggling ring, extending to more places than just Los Angeles. When the first operation is not a success, and turns out to be a smokescreen, Bubba and Ski are assigned to go undercover as truck mechanics, but they also accidentally discover that Aggie Mills is not all what she says she is, and happens to be associating with the man in-charge of the whole operation, Harold Longstreet. When Bubba and Ski are caught red-handed while placing a radar receiver on one of the trucks, in order for Chaney and Braddock to know where the drugs and the weapons are being ferried from, its a race against time for Chaney and Wonderlove to save their two crew members, and prevent Longstreet and Mills from getting away, unconvicted.

The witness, also his confidental secretary, who could put her employer, corrupted financier Richard J. Lassiter behind solid steel bars is rescued by the Blue Thunder unit from an estate where her kidnappers were previously holding her hostage, until Lassiter's court-trial was finished. He has been sentenced for 25 years for fraud, extortion and imtimidation, and is scheduled to be transferred to Greenlake Penitentiary, a medium-security facility, located in the Central part of the state.

Complaining of a gut instinct that Lassister will have his associates prepared to rescue him from lifetime imprisonment while being transferred in a police motorcade, Braddock warns Chaney not to go anyway near the transportation, however he does so. If he hadn't, then Lassiter would have got away scot free, thanks to a truck parked in the middle of the routed road with heavy automatic weapons, which is blown away by Blue Thunder's 20mm 6-barrel Vulcan electric cannon.

Now in prison, Lassiter already