The Foundation has accidentally developed a powerful new isotope, Cernium 116. Jennifer Knight, Wilton's daughter takes this opportunity to cut down on FLAG expenses. Rebuild terrorist Phillip Nordstrom kidnaps Devon and replaces him with a duplicate in order to extract the secret of K.I.T.T.'s Molecular Bonded Shell. Having found a way to neutralize it, Nordstrom unleashes his own super vehicle, the Juggernaut on an unsuspecting K.I.T.T. Without any resources to fall back on, Bonnie enlists the help from Chicaco crime fighter the Street Avenger (aka RC3) to help rebuild K.I.T.T. and give him a few new extras.

Michael and a rebuilt KITT rush to stop Nordstrom before he can hand over the new isotope.

Jeff Cavanaugh, another crook arrested by Michael in a previous but unseen adventure, escapes from jail with help Julian Martin. Fearing FLAG is on his tail, Julian decides to kidnap Mike's latest flame Karen and also gets his hands on K.I.T.T.

On her way to her sister's wedding in Boston, Bonnie's plane is highjacked by the New Dawn Movement. Its leader, Charles Zurich, plans to trade his hostages for 197 prison inmates and forces the plane to land at a military base housing a project known as Deep Sleep.

An archaeologist being sponsored by FLAG is kidnapped after finding proof positive that a piece of land belongs to a tribe of Indians. Not surprisingly, a business man who wants to drill oil in the same area is the culprit.

A gang of bikers with a knack for hijacking semis gets hold of the FLAG mobile headquarters by accident. With the help of a young computer whiz, they use the Foundation equipment to rob a bank, then set their sights on an experimental new vehicle called the Ferret.

The entire roster of FLAG personnel goes undercover to stop an American diplomat from selling a biological weapon to the "Hammer-of-the-Desert." KITT is disguised as a '55 Lynx Imperial racing car they plan to offer for sale. RC3 poses as the middleman, Bonnie as the seller, "Alisha Craven-Hall." Michael pretends to be hired killer Johnny Hajeck and even Devon joins in, playing the part of a newsreader.

Michael is celebrating his fourth 'birthday' as a new man when Devon recruits him for a mission to find a stolen experimental hovercraft with great destructive power.

Although Devon would rather have Michael on a Rembrandt forgery case in Cincinnati, he allows him to help a mechanic friend of Bonnie's, Elena Thomas, who's facing sabotage on the racetrack. Since Elena's top driver has been killed in an accident apparently caused by her faultiness, Michael volunteers to take the man's place.

FLAG architect Matt Erickson is the victim of a pickpocket at his own party that Bonnie & Michael are attending. The thieves turn out to be two female prisoners let out by their scheming warden to test their abilities for a big heist. After Michael and K.I.T.T. track down both suspects to their solitary cells at the prison, Bonnie goes undercover as an inmate at the penitentiary in question.

Michael, RC and even Bonnie use K.I.T.T. as an alibi to visit Chicago instead of doing a mission in Detroit. RC wants to catch blind singer Charley Connor's performance at his old friend Josh Bevin's bar. But Bevin is on the receiving end of a beating by some thugs hired by construction overseer E.G. Sanford. To complicate matters, RC refuses to believe that his childhood friend and hero Keith Lawson is leading the enforcers. Meanwhile K.I.T.T. hooks up with a bunch of kids who show considerable music talent and decides to coach them, despite the fact that the car is quite tone-deaf.

Michael resigns from the foundation after a near death experience in order to settle down with his long time love Stevie.

Marco Berio, a former employee of F.L.A.G, uses his knowledge of K.I.T.T. to override the Trans Am's CPU and turn him against his owner, Michael Knight.

A small time owner of a lumber company takes on a big rival named Dutton, who happens to be a sponsor of the Foundation. As Michael and K.I.T.T. investigate the case, they realize Dutton is practically forcing the little guys out of business.

The four members of the Curtis trustees are being murdered one at a time. Now only Devon Miles and Dr. Ian Browning are left. Michael suspects that magician Austin Templeton could be the assassin, using his magic act as an alibi in each case. Bonnie disagrees, for she has fallen for the self proclaimed sorcerer's charms.

Michael investigates the murder of a deaf sportswriter who wanted to stop an ex boxing champ from coming out of retirement.

Michael's CIA pal Lew Jonas gets killed during a raid on crime boss Ronald Becker. Becker plans to get out of the country using the illegal Baja race to Mexico as a cover. Michael vows to catch Becker if it's the last thing he does.

While on ranger duty, Michael and K.I.T.T. rescue a young kid named Darryl from a forest fire. When Darryl subsequently gets framed for arson, Michael sets out to prove the boy's innocence.

Michael and RC arrive in San Duarte just in time to see Mount Duarte erupt for the first time since 1874. With the lava flow blocking the way in and out of the country, Colonel Perata stages a coup and holds American advisor Harrison and his wife hostage. Michael joins local news reporter and guerrilla leader Lisa Corrales in her fight to reinstate democratic President Sosa.

The 'Phantom of Stage 28' appears to be haunting the set of modern day Western 'Raging Sky', so Michael takes on the part of a stunt double while doing some investigating.

Michael and RC are meeting with Nick O'Brien, an old friend of Devon, with whom he served in Korea. They end up protecting Nick's adopted son Coy from Ninja leader Taneka, who is convinced the boy is the rightful heir to his clan.

Michael walks in on a robbery at Towers Gemstones Inc to find three men seemingly under the influence of a voodoo princess. While investigating incidents involving wealthy art collectors, Michael meets Elizabeth Wesley who explains that the object every one is after is the fabled crown of Tequatl.