Marcel Murphy, a telephone operator with society aspirations, overhears Mrs. Margaret Benson's conversation describing a party she is planning for her son, Ralph, and wangles an invitation by imitating the hostess's voice. At the party, a maid accuses Marcel of stealing another guest's jewelry, but Mr. Benson creates an alibi for Marcel, claiming she is the daughter of an old friend. He then secretly rents a hotel suite for her. Complications reach a climax when Ralph, Mrs. Benson, and Marcel's parents arrive at the hotel at the same time and find the young woman alone with Mr. Benson. Matters are explained, and Ralph asks Marcel to be his wife.