With Devon's permission to take a few days off, Michael heads for the small town of White Rock to do some mountain climbing. Taking a burger and fries break at a local general store, run by beautiful Sherry Benson and her younger brother Davey, Michael encounters Monk and the Scorpions, a vicious bike gang who are terrorizing the town. Matters get out of hand when Michael tries to break up a fight and protect Sherry from their advances. Unfortunately, the local sheriff is afraid of antagonizing the hoodlums, and arrests Michael instead. While in jail, Michael learns that the Scorpions have invaded the town in order to ready themselves for a gang war with another bike outfit, scheduled to show up the following day. With K.I.T.T.'s help Michael breaks out of jail, and rushes to their campground, intending to take the law into his own hands. After a series of spectacular stunts that overpower the bewildered bikers, Michael finally enlists the aid of the reluctant sheriff to run the gangs out of town.