"The Dispossessed," a novel by Ursula K. Le Guin, explores contrasting societies through the story of Shevek, a physicist from the anarchist moon Anarres, who seeks to break barriers between worlds. Anarres is a society that values communal living and rejects ownership, while its sister planet Urras thrives on capitalism and wealth. Shevek's journey highlights his struggle to reconcile his ideals with the realities he faces in both societies.