In a distant future, humans inhabit a gas torus, a ring of breathable atmosphere around a neutron star, where they have adapted to life in free fall within this unique environment. The story follows a group of these humans who live among the "Integral Trees," gigantic, sky-spanning plants with their roots and branches extending in both directions away from a central trunk, in zero gravity. When the ruling order on one of the trees begins to falter, a small band of intrepid characters embarks on a journey that reveals the complex ecosystem of the torus and the intricate society that has evolved there. As they navigate the challenges of their three-dimensional world, they uncover secrets that could change their society forever, exploring themes of adaptation, survival, and the human spirit's unyielding drive to explore and understand its surroundings.

The 10363rd greatest book of all time