On Halloween night in the year 1965, Newbomb Turk is the leader the Hollywood Knights, a car club made up of teenage boys who play pranks, harass the police and display their cars at Tubby's Drive-In restaurant in Beverly Hills, California. Their way of life is about to change because Tubby's is being demolished to be replaced by a new office building. As the Knights find ways to rebel against the plan, they are also busy with the initiation of four new club pledges on Halloween night. After the pledges are stripped, they are deposited in the Watts district of Los Angeles, California, to ensure that the dedication to Tubby's is read on air at 2:00 AM that night at a local radio station. The Knights have fun but never for long because, whenever possible, Officers Clark and Bimbeau lecture them about their juvenile behavior.