 On a day in the life of the 21st Precinct detective squad, we meet a batty old lady; petty embezzler Arthur, and the wonderful girl whose unrequited love may redeem him; a pair of blustering, but dangerous, burglars; a charmingly naive shoplifter who observes the activity with timorous interest; and Detective Jim McLeod, self-appointed crusader who has no mercy for lawbreakers. He little suspects his obsessive pursuit of an abortionist is leading him to personal disaster.