Leonard Hoffman is an insurance salesman struggling to make ends meet. The fact that he has triplet sons who all want to go to Yale isn't making things any easier. Blanche Rickey is also worried about money; her husband is a millionaire with a weak heart, and she worries that he'll blow through all his cash before he finally dies. When Blanche meets Leonard, she devises a murderous plan that she claims will fix both their problems.

When her steamy Ph.D. thesis becomes a best-selling movie property, Julie Todd discovers that Hollywood wants more than just her book. She herself is a “hot property,” sought by both the director of the film and the arrogant young rock musician who’s playing the lead role. But while Julie speeds through life in the fast lane, her marriage may be running into a dead end.

Michael Long, an undercover police officer, is shot while investigating a case and left for dead by his assailants. He is rescued by Wilton Knight, a wealthy, dying millionaire and inventor who arranges life-saving surgery, including a new face and a new identity--that of Michael Knight. Michael is then given a special computerized and indestructible car called the Knight Industries Two Thousand (nicknamed KITT), and a mission: apprehend criminals who are beyond the reach of the law. The series depicts Michael's exploits as he and KITT battle the forces of evil on behalf of the Foundation for Law and Government.