Johnny Depp stars as Tom Hanson, a baby-faced rookie cop assigned to the Jump Street unit, an elite division of the police force specialising in the undercover infiltration of high schools in order to fight and prevent juvenile crime. Hanson soon learns that teenagers are equally at threat from crime as their elders, both as victims and perpetrators, when he finds himself investigating instances of drug dealing, teenage prostitution, rape, sexual abuse, gang warfare and murder.