A page from the life of Dr. Frederick Banting, discoverer of insulin for the treatment of diabetes. The film is a re-enactment of the critical year in Dr. Banting's life during which he made his important discovery at the University of Toronto. It convincingly dramatizes the odds against which he and his assistant, Charles Best, worked, the skepticism of other doctors, and the final victory which gave thousands of diabetics a new hope of life and health.