The medics treat 60-year-old diabetic Tony, who has an infected leg wound and must be assessed to ensure it doesn't spread, and three-year-old Billy, who has swollen eyes after accidentally squirting detergent in them. Also treated is 80-year-old Ida, who has pain in her knee, and doctors are concerned when an x-ray reveals a shadow on her bone, which requires further tests to rule out cancer.