After a beloved teacher is tragically killed in a hit-and-run accident in Greenpoint, Brooklyn, a grassroots movement emerges to transform a notoriously dangerous four-lane boulevard into a safer, two-lane street with protected bike lanes. The film situates this local struggle within broader historical, environmental, political, and social contexts through interviews with politicians, activists, urban planners, entrepreneurs, and cultural icons like David Byrne and Janette Sadik-Khan.