Someone who kidnapped an ambassador has Mike and K.I.T.T. jumping through hoops as a ransom in order to get her back, while Sarah and her father deal with an out-of-control robot.
The rest of the team leaps into action as the kidnapper still holds the ambassador hostage and puts Mike and K.I.T.T. on a course heading north with a nuclear bomb in K.I.T.T.'s trunk.