The Flight of Mavin Manyshaped is the second novel in the Chronicles of Mavin Manyshaped trilogy, which follows the adventures of Mavin, mother to Peter from the True Game trilogy. This book is unusual in that it is not from Mavin's point of view, but from that of Beedie, a girl who lives in a giant chasm, spanned by bridgetowns and living off the roots of giant trees from above. Mavin has been searching for her lost sister Handbright for fifteen years, ever since leaving their brother Mertyn with the Seer Wondlow.

Her search has taken her across the sea, to land without Gamesmen and with it's own peculiar culture. Handbright has ended up deep in the chasm, kept by the religious caste as a sign from their God. Beedie and Mavin decide to adventure together to solve a problem the bridge people are having.

Beedie discovers the truth behind some of the legends of her people, including the true story of Lostbridge, known as Waterlight, and what is really at the bottom of the chasm. While Mavin may have found her sister at last, the situation is more complex than it seems and she will have to be careful, or handbright may not survive.