Mikey O’Hoolihan and Fritzy Schmidtburger, living in what is known as Hogan’s Alley, find no end of amusement playing pranks on unsuspecting passersby. They finally settle down to a game of marbles. Mikey accuses Fritzy of cheating and a hot fight ensues, in which Fritzy is beaten, and, crying bitterly, goes home and tells his mother. Mrs. Schmidtburger’ “Dutch” is up at once and picking up a broom, she starts on the war path. She sails into Mikey with the broom, who in turn goes home and tells his maternal parent of the undeserved beating he received at the hands of Mrs. Schmidtburger. Mrs. O’Hoolihan, with true Irish pugnacity, starts for Mrs. Schmidtburger and a hair-pulling match takes place in which Mrs. O’Hoolihan is victorious. The neighbors flock about Mrs. Schmidtburger in sympathy just as her husband is returning from the corner saloon with a growler of beer. Finding his poor frau all tousled and beaten he goes at once to the O’Hoolihan home and demands an explanation for the outrageous treatment. He is unable, however, to get satisfaction and gives Mrs. O’Hoolihan a piece of his mind. The latter’s husband, though peacefully inclined throughout the entire proceeding, now feels it his duty to take a hand in the matter and protect his wife against Mr. Schmidtburger’s insulting remarks, and a battle of words ensues culminating in a fist fight. They create such a rumpus that the neighbors send in a policeman to restore order. Both men are dragged out into the alley and are about to be taken to the lock-up when a recital of the fight and the cause of it all takes place. Meanwhile, Mikey and Fritzy have patched up their differences and appear upon the scene. The parents, seeing their offspring in each other’s embrace and to all appearances the very best of friends, now halt and look at each other in amazement. Realizing what fools they have been to take the matter so seriously, they shake hands all around.