In ridding the area of muggers, the East Side Boys acquire a wealthy benefactor whose privileged son, unbeknownst to him, has fallen in with thugs.
Ordered by a judge to get a job, Muggs McGinnis is hired by wealthy Mrs. Murray, who has a penchant for picking up trouble-prone servants. At an engagement party for Mrs. Murray's spoiled daughter Brenda, Muggs enlists his pals as extra help.
