A companion to the New York Times bestselling series that began with Nat Enough!Nat's on an overnight class trip to Philadelphia -- her first time being in a big city without her parents. But the trip isn't off to a good start, especially since Nat lost her phone, and things keep getting worse! Between stops at the Liberty Bell, Independence Hall, and Congress Hall, Nat and her friend Flo get separated from their class! With no phone, no map, and no direction, can Nat and Flo