As the realm struggles to maintain an uneasy peace after years of civil war and tyranny, a twelve-year-old orphan called Mosca Mye and her loyal companion, a cantankerous goose, are about to become the unlikely heroes of a radical revolution. Mosca is on the run, heading for the city of Mandelion. There she finds herself living by her wits among cut-throat highwaymen, spies and smugglers. With peril at every turn, Mosca uncovers a dark plot to terrorize the people of Mandelion and soon merry mayhem leads to murder . . .