Upstart paramedic Ollie Cross courses through adrenaline-fueled nights in an ambulance for the New York City Fire Department in Brownsville, Brooklyn while spending days studying for med-school exams in a Chinatown hovel. Working alongside seasoned first responder Gene Rutkovsky, Cross discovers firsthand the chaos and awe of a job that careens from harrowing to heartfelt, and occasionally stretches into ethical ambiguity.