[1] Season two saw the departure of Patricia McPherson as Bonnie Barstow, who was replaced by Rebecca Holden as April Curtis, who became the new technician for KITT.

Michael is shocked to learn of the existence of Wilton & Elizabeth's son, Garthe, who is plotting with his mother to steal the formula for KITT's molecular bonded shell.

Michael uncovers her brother's audio tapes containing information on a place known as "Red Bluff", a classified weapons storage facility deep in the Nevada desert.

Just how Garthe intends on getting the missiles out of the highly guarded facility isn't certain; that is until Michael comes face-to-face with a massive semi truck known as "Goliath" which is protected with the same indestructible molecular bonded shell technology as KITT.

Michael then poses as Garthe to fetch Rita from the casino, and intercept Goliath before General Kuna uses it to break into Red Bluff.

Since Bergstrom's knowledge would be quite valuable to an enemy government, the Foundation is assigned to protect him, however things get complicated once Michael learns of Garthe's escape and the sudden appearance of Goliath which was thought to be destroyed.

With Michael temporarily out of the way, Garthe and Adrianne abduct Dr. Bergstrom and replace him with a surgically altered clone to deceive his niece Christina.

When Michael and Joanna check out the site, they find the operation was smuggling more than immigrants when pieces of pottery are found with flecks of gold.

Michael learns the man is David Dalton (Charles Taylor), a federal investigator working secretly for the Justice Department.

Michael and KITT conduct the legwork of the investigation while Dalton stays close to Joanna who decides to infiltrate O'Brien's birthday party at a beach house estate owned by Elton Mathews.

As KITT creates a disturbance, Michael hitches a ride aboard a truck and finds statues with gold bricks inside.

Michael and KITT soon learn the rockets are for a semi truck with a mobile launcher hidden in the trailer and the duo barely escape its attack.

Meanwhile, Michael follows Mathew's trucks to the dig site discovering a cave "the mouth" and a secret tunnel "the snake" which leads to a military weapons depot.