Chicago's underworld operates under an uneasy truce, with “Shep” (Cesar Romero) controlling one territory and "Pretty Willie" (Sheldon Leonard) another. This fragile stability is threatened when “Shep” meets “Judy” (Virginia Gilmore), and to ensure she stays close, he hires her as a nanny. But a nanny for whom? Since he has no children, they bring in the defiant young “Harry” (Stanley Clements), who goes along with t…