Director Emmett Adler explores the role of the MTA in New York City and the impact that the Covid-19 pandemic had on the vital service it provides: transporting New York’s essential workers. The film acknowledges the decline of the subway infrastructure as a political issue and captures a tumultuous time that impacted every city in America. A heartfelt and scrupulous exploration, this film poses the question: what happens when the lifeline of a city goes flat?