Twins Arthur and Maudie Brightstorm undertake a perilous journey to uncover the truth about the death of their famous explorer father and his supposed sabotage of a competitor's expedition.
Twins Arthur and Maudie are back home in Lontown, but when they begin hear a strange song summoning them north, they know there is an adventure waiting for them for them that may change the lives of everyone in the Wide.
Twins Arthur and Maudie set sail in their sky-ship to find noted explorer and author Ermitage Wrigglesworth, but their newly-discovered aunt, Eurora Vane, is also seeking him--and a secret he had just uncovered.--