The initials stand for University Medical Center, where this TV movie was set (the University was actually UCLA, though not so named). The heads of the institution are Dr. Joseph Gannon (Richard Bradford), and Gannon's mentor and best friend Dr. Lee Forestman (Edward G. Robinson). Gannon performs a heart transplant on Forestman, a procedure that lands him in court. The plaintiff is the heart donor's widow, who claims that Gannon allowed her husband to die to save Forestman. When U.M.C. developed into the long-running weekly series Medical Center, Edward G. Robinson was busy elsewhere, Chad Everett replaced Richard Bradford as Gannon, and James Daly, third-billed in U.M.C., had been appointed the med center's chief of staff.