Life in lower Manhattan is normal for Molly, her dads, and younger sister. But on September 11, 2001, everything changes. Molly and her younger sister, Adeline, are at school when the first plane hits the World Trade Center. When the Twin Towers fall, the city is thrown into chaos. Papa, a pilot, is flying, Dad can't be reached, and Gran, an EMT with the New York Fire Department, is at Ground Zero. It's up to Molly to find her sister and navigate a city she no longer recognizes.