Molly, Emmett, and Molly's mother compete in a high-profile race to become the first people to reach the South Pole, where Emmett's father, explorer and ship captain Wendell Lee, disappeared years ago.
In 1883 New York, while trying to introduce her mother's flying machine to the men-only Inventors' Guild, twelve-year-old Molly uncovers a plot to destroy the World's Fair.
