The moonlike world where the utopian society lives in Ursula K. Le Guin's The Dispossessed is Anarres. It is the drier, poorer twin world of Urras in the Tau Ceti system, and it becomes home to revolutionaries who leave Urras to build a society based on Odonian anarchism.
Anarres has no conventional state, private property, or organized religion. Its people coordinate work through voluntary associations, syndicates, and systems such as Divlab, which helps match workers with social needs. The society aims for equality and mutual aid, but Le Guin deliberately shows that even an anarchist utopia can develop conformity, bureaucracy, social pressure, and resistance to change.
The novel follows Shevek, an Anarresti physicist whose research and personal journey lead him back into contact with Urras. The book alternates between the two worlds, contrasting Anarres's communal austerity with Urras's wealth, hierarchy, and political conflict.
A frequent mix-up is Urras, which is the lush sister world and the original home of the settlers. Earth and Hain belong to other parts of Le Guin's wider Hainish setting.