Two young high school boys spike the punch at a Halloween party, mischievously let the air out of car tires, and finally steal a car to go for a joyride. They're caught and thrown in jail, and, as the narrator says, this proves that pranks lead to "habit-forming wildness," and, of course, such anti-social behavior cannot be allowed to happen

"If You've Been Arrested - You're A Delinquent!"