The kids in the tenements have no place to play except in streets where traffic is a hazard. Mickey gets the idea of building barricades to give our gang space to play at an intersection, but a beat cop, the nasty "Hard-Boiled" McManus, puts a quick end to that. A sympathetic constable and a detective who has kids of his own give our gang a chance to help law enforcement. The little rascals wear uniforms and keep an eye on things: Joe, for instance, eyes the bananas at Tony's fruit stand. When the now-fired McManus returns and seeks revenge, the junior police force and their adult colleagues are put to the test.