Donald and his nephews are the staff of a fire station. Huey, Dewey, and Louie, annoyed by Donald's snoring, ring the fire alarm. Soon, his bumbling sets the fire station itself on fire. They race off at the alarm, not realizing they are already at the destination, and the firefighting efforts go downhill from there.
Mickey, Donald and Goofy are a fire department. As you might expect, their attempts at fighting a boardinghouse fire are not particularly effective. They hear Clarabelle singing in the bathtub and rescue her, tub and all, against her will (she won't believe there's a fire).
The film explores the world of firefighters in 1920s New York City and tells the story of a 16-year-old girl who will have to become a hero in order to save her city.