A wealthy Chicago clubman, J. Robert Orr, while stopping in New York, meets Helen Worth, a nurse at Mercy Hospital, through the medium of a street accident. With him it is love at first sight, and he is quite eager to see her again, although she does not give him her name. Determined to carry out his desire, he pretends to be very sick at the club, and begs to be taken to the Mercy Hospital. His scheme works all right, but unfortunately, Miss Worth is called away to attend a private patient, so that when Orr arrives at the hospital, he is taken in charge by the most awful apparition of a nurse he ever beheld. He tries four nurses, but refuses to allow them to tend him as all are homely as sin. Being plentifully supplied with money, he feels he can afford to be particular. After some very distressing experiences, Orr manages to escape from the hospital, clad in nurse's clothes. He appears at the club, where his friends think he is crazy and call a doctor. By chance, Doctor Worth, Helen's brother, is called. Although puzzled at Orr's peculiar hallucinations concerning nurses, he finally yields to the almost madman, and sends for Helen, his sister, whose private patient is out of danger. As soon as Helen's soothing hands touch his fevered brow, Orr, realizing that his angel has returned, opens his eyes and gazes into the girl's face. She smiles at him and he then goes quietly to sleep. Next morning, while she is taking his temperature, he writes a note to her reading, "I love you. Won't you promise to marry me, if I am normal." Helen, pretending to be annoyed, takes the little thermometer from his mouth, looks closely at it, then shyly whispers, "You're normal," and consents to become his nurse for life.