Arabia, the feature of a society circus, causes his owner, Essie Fay, disquietude in unmistakable signs of sickness. In conformity with expert advice she concludes to send her pet to a sanitarium, and she relieves old Joe, the Negro hostler, of his duty as a rubber-in of liniment. The scene shifts from the circus stable to Dr. Blevin's health resort. Joe comes, leading Arabia, followed by Miss Fay. When she goes into the house to consult with the doctor she is promptly followed by her horse. As the door closes before the horse gets to the threshold of the office, the animal wanders down the corridor of the resort. Seeing a door ajar, the horse noses it open and enters the room of an old maid. Miss Betsy Briggs vacates the premises, and Arabia, curious, opens her trunk and, after emptying it of female apparel, closes the lid and stalks out. Yens Yensen, the window washer, observing Arabia entering a room, falls to the ground in faint, and the horse comes to the window and looks down at him in a mournful way. Sambo Johnson comes slouching down the hall with a tray of food balanced on his hand, which is upset when Arabia rushes at him. On a further tour of inspection the horse picks up the handbag of a nurse and will only give it to her mistress. As a finale the horse takes to her bed and, adjusting a nightcap, signals "Good night."