Young worker Gáspár Tóth is hospitalized with stomach problems. The doctor on duty suspects an ulcer. At night, Tóth's condition worsens, but the nurse on duty, Málnási, does not go to the patient despite the nurse's call, because she spends the night with her assistant Margo. Tóth writes in the complaint book, but receives no satisfaction, and the hospital staff brand him a sickness fraudulent malingerer. Doctor Málnási is becoming uncomfortable with the pregnant Margo.