Seth volunteers at City Hospital to get first-hand experience with emergency medicine — and get comfortable with blood and trauma before attending medical school, so he'll have an edge over the competition. Diana volunteers in the inner-city ER to save the world, one patient at a time. If she gets to show up arrogant Seth too, so much the better. The one thing these two college freshmen share is a desire to be a part of the ER's action. Tonight, hour by hour and minute by minute, they will get their wish as they confront a student with a gunshot wound, the victim of a gruesome motorcycle accident, and a kidnapping gone horribly awry. Their adrenaline-fueled night will alter the course of Seth and Diana's lives — and the lives of everyone in the emergency room — forever.