It's the real-life Grey's Anatomy … in Chicago. Every day, a team of idealistic young doctors rides the El to Chicago's gritty southwest side. But no amount of reading can prepare them for the most challenging test of their lives — a residency in one of the nation's busiest trauma centers. Here at Cook County Hospital, realities of urban life come crashing through the door by the hour. With more than 5,000 trauma patients a year, the action is literally a life-and-death adrenaline rush.