What do you think teenagers are capable of? Experience a heart-stopping, inspirational year with Darien EMS—Post 53, the only ambulance service for the 20,000 residents of Darien, Connecticut, as it covers a deadly stretch of highway, responds to over 1,500 emergency calls, and is run by high school teenagers. High School 9-1-1 explores this one-of-a-kind organization through the eyes and voices of the high school students running it.