He's a bad seed, see? There's a reference to him smoking marijuana. She falls in with his hard-partying ways to the dismay of her ex-boyfriend Mike, and older sister. When Vinton finds out he's wanted by the cops, he takes Doris across state lines to an Ohio motel. Freaked out, she takes his car and tries to get back home with no license, but is pulled by the cops and held. Mike and older sister have to testify and get her out of the jam. She comes home a more reserved gal, trying to get back in Mike's good graces.
Vinton probably went to jail for parole violations.