Below the city of flight are the flightless, Those who aren't able to fly who lay restless upon the ground. Triton is newly Grounded, thrown into The Below with no belongings and a scar on his face. Triton wanders the below, until he is founded by Misah, a boy only sixty-five years his senior who takes him to The Forest, where a city of flightless live. Triton is assigned a sibling, given a house and told to buckle down for the hundred years he's supposed to live there. But as much trouble it takes him to fit in, it takes even more time to face outside troubles.