Jeff Ustin is a fiery sparkplug of a doctor with the unwavering commitment to his patients. A brilliant trauma surgeon, he sometimes uses his temperament to get a point across. When a geriatric patient is overmedicated or a cardiologist is unavailable to view a scan, he explodes in Technicolor.Sara Dumas us a teenager beloved by friends and family. High-spirited and curios about the world, she is hampered by a congenitally diseased heart that will kill her within weeks if a donor can't be found. For any mother, this would be a nightmare. However, Sara's mother also has to content with the realization that the family will go through everything twice. Sara's brother, Ian, has the exact same ailment as his sister.Andrew "Bardouche" ElBardissi is a fellow intern and best friends with Rick Reish. Together, they spend their precious downtime trying to generate a social life and conspiring about how to date nurses. At work, these two supremely confident rookies are hazed by the senior doctors training them. ElBardissi shows great technical promise as a surgeon and cares deeply about patients.