When she was a baby, Patsy Smith's father quarreled with his wife and kidnapped Patsy. After her father died at sea, Captain Barnaby took Patsy to Mrs. Duff's boardinghouse for seafarers. Dissatisfied with drudgery, Patsy, inspired by Barnaby's tales of Aladdin, searches for her father's Oriental lamp which Mrs. Duff sold to a junk peddler. Patsy buys the lamp and after rubbing it, the Genie Jehaunarara appears. He beautifies her room, restores Barnaby's leg, and turns Mrs. Duff into a rag doll. Because love is beyond his magic, however, the Genie cannot reunite Patsy with her mother. At a masquerade ball, when the Genie's costume wins first prize, Patsy's applause unwittingly causes him to disappear. Clad only in her underwear, Patsy runs to her mother, and awakens from a dream. Disheartened, she throws the lamp out the window, and it nearly strikes her friend Harry, a grocer's boy who wants to become a lawyer, and then, like Lincoln, president. From letters found in the lamp, they locate Patsy's mother, who arrives with her brother, a distinguished judge. Taken under his wing, Harry now imagines himself president with Patsy as his first lady.